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Canon of the Mass (Latin: Canon Missæ, Canon Actionis) is the name given in the Roman Missal, from the first typical edition of Pope Pius V in 1570 to that of Pope John XXIII in 1962, to the part of the Mass of the Roman Rite that begins after the Sanctus with the words Te igitur. All editions preceding that of 1962[1] place the indication "Canon Missae" at the head of each page from that point until the end of the Mass; that of 1962 does so only until the page preceding the Pater Noster and places the heading "Ordo Missae" on the following pages.[2]

Before 1962 there were divergent opinions about the point where the Canon of the Mass ended. Some considered that it ended where indicated in the 1962 Roman Missal,[3] others where indicated in the earlier editions from 1570 onwards (the end of Mass), others at the conclusion of the Embolism (Libera nos ...) that expands on the final "Sed libera nos a malo" petition of the Pater Noster.

The editions of the Roman Missal issued since 1970 use the term "Roman Canon" of the first[4] of its four Eucharistic Prayers, and place the words "Prex Eucharistica" before the dialogue that precedes the Preface,[5] and the new heading "Ritus communionis" before the introduction to the Pater Noster.

For detailed information on the history of the Roman Canon of the Mass, see the article Canon of the Mass in the Catholic Encyclopedia, from which the rest of this article has been transcribed.

Name and place of the Canon

One can only conjecture the original reason for the use of the term Canon. Walafrid Strabo says: "This action is called the Canon because it is the lawful and regular confection of the Sacrament" (De reb. eccl., xxii); Benedict XIV says: "Canon is the same word as rule, the Church uses this name to mean that the Canon of the Mass is the firm rule according to which the Sacrifice of the New Testament is to be celebrated" (De SS. Missæ Sacr., Lib. II, xii). It has been suggested that our present Canon was a compromise between the older Greek Anaphoras and variable Latin Eucharistic prayers formerly used in Rome, and that it was ordered in the fourth century, possibly by Pope Damasus I (366-84). The name Canon would then mean a fixed standard to which all must henceforth conform, as opposed to the different and changeable prayers used before (E. Burbridge in Atchley, "Ordo Rom. Primus", 96). In any case it is noticeable that whereas the lessons, collects and Preface of the Mass constantly vary, the Canon is almost unchangeable in every Mass. Another name for the Canon is Actio. Agere, like the Greek dran, is often used as meaning to sacrifice. Leo I, in writing to Dioscorus of Alexandria, uses the expression "in qua [sc. basilica] agitur", meaning "in which Mass is said". Other names are Legitimum, Prex, Agenda, Regula, Secretum Missæ.

The whole Canon is essentially one long prayer, the Eucharistic prayer that the Eastern Churches call the Anaphora. And the Preface is part of this prayer. Introduced in Rome as everywhere by the little dialogue "Sursum corda" and so on, it begins with the words "Vere dignum et justum est". Interrupted for a moment by the people, who take up the angels' words: "Sanctus, sanctus, sanctus", etc., the priest goes on with the same prayer, obviously joining the next part to the beginning by the word igitur. It is not then surprising that we find in the oldest sacramentary that contains a Canon, the Gelasian, the heading "Incipit Canon Actionis" placed before the Sursum Corda; so that the preface was then still looked upon as part of the Canon.

However, by the seventh century or so the Canon was considered as beginning with the secret prayers after the Sanctus (Ord. Rom. I: "When they have finished the Sanctus the pontiff rises alone and enters into the Canon", ed. Atchley, 138). The point at which it may be considered as ending was equally uncertain at one time. There has never been any sort of point or indication in the text of the Missal to close the period begun by the heading "Canon Missæ", so that from looking at the text we should conclude that the Canon goes on to the end of the Mass. Even as late as Pope Benedict XIV there were "those who think that the Lord's Prayer makes up part of the Canon" (De SS. Miss Sacr., ed. cit., 228). On the other hand, the "Ordo Rom. I" (ed. cit. infra, p. 138) implies that it ends before the Pater Noster.

The two views are reconciled by the distinction between the "Canon Consecrationis" and the "Canon Communionis" that occurs constantly in the Middle Ages (Gihr, Das heilige Messopfer, 540). The "Canon Communionis" then would begin with the Pater Noster and go on to the end of the people's Communion. The Post-Communion to the Blessing, or now to the end of the last Gospel, forms the last division of the Mass, the thanksgiving and dismissal. It must then be added that in modern times by Canon we mean only the "Canon Consecrationis".

The Canon, together with the rest of the "Ordo Missæ", is now printed in the middle of the Missal, between the propers for Holy Saturday and Easter Day. Till about the ninth century it stood towards the end of the sacramentary, among the "Missæ quotidianæ" and after the Proper Masses (so in the Gelasian book). Thence it moved to the very beginning. From the eleventh century it was constantly placed in the middle, where it is now, and since the use of complete Missals "according to the use of the Roman Curia" (from the thirteenth century) that has been its place invariably. It is the part of the book that is used far more than any other, so it is obviously convenient that it should occur where a book lies open best -- in the middle. No doubt a symbolic reason, the connection between the Eucharistic Sacrifice and the mysteries of Holy Week, helped to make this place seem the most suitable one. The same reason of practical use that gave it this place led to the common custom of printing the Canon on vellum, even when the rest of the Missal was on paper -- vellum stands wear much better than paper.

History of the Canon

Little is known of the liturgical formulas of the Church of Rome before the second century. In the First Apology of Justin Martyr (circa 165) an early outline of the liturgy is found, including a celebration of the Eucharist (thanksgiving) with an Anaphora, with the final Amen, that was of what would now be classified as Eastern type and that was celebrated in Greek.

Latin's use as a liturgical language seems to have occurred first in Africa (the Roman province corresponding approximately to present-day Tunisia, where knowledge of Greek was not as widespread as in Rome). On the basis of the uncertain attribution to him of a treatise found among the writings of Saint Cyprian, it is sometimes said that Pope Victor I (190-202) may have been the first Pope to write in Latin. A further supposition leads some to say he was the first Pope to use Latin in the liturgy. The burial inscriptions of the Popes suggest that the change of language for the papal Mass was somewhat later: the inscriptions begin to be in Latin with that of Cornelius (d. 253). But Latin may have been used in the liturgy for some groups in Rome earlier than that, just as, to judge from a quotation in Greek from a Roman oratio oblationis of 360, other groups will have continued to use Greek even later in that cosmopolitan city. (See volume I, page 65 of the original text of Josef Jungmann's work that has been translated into English as "The Mass of the Roman Rite: Its Origins and Development".) "The first Christians in Rome were chiefly people who came from the East and spoke Greek. The founding of Constantinople naturally drew such people thither rather than to Rome, and then Christianity at Rome began to spread among the Roman population, so that at last the bulk of the Christian population in Rome spoke Latin. Hence the change in the language of the liturgy. ... The liturgy was said (in Latin) first in one church and then in more, until the Greek liturgy was driven out, and the clergy ceased to know Greek. About 415 or 420 we find a Pope saying that he is unable to answer a letter from some Eastern bishops, because he has no one who could write Greek."[6]

"The Roman Canon is not in its primitive form" but has many "awkward transitions" that show that it is "evidently an abbreviated and transposed version of a more ancient eucharistic prayer".[7] "At least in its final form it is not structured as a single unitary prayer. Since 1474 it was printed in paragraphs, marked with initial letters and divided by rubrics (so that some pre-Vatican II missal users took it to be a set of discrete prayers). Several of the paragraphs had a conclusion – Per Christum Dominum Nostrum – with interpolated Amens. The Prayer thus appeared as a series of discrete prayers, and one can understand the force of the remark of Thomas Cranmer's chaplain Thomas Become, when he described it as a 'hotch-potch... a very beggar's cloak, cobbled, clouted and patched with a multitude of popish rags'".[8]

Some of the prayers of the present Roman Canon can be traced to the Eastern Liturgy of St. James. Several of the prayers were in use before 400 in almost exactly their present form. Others (the Communicantes, the Hanc igitur, and the post-consecration Memento etiam and Nobis quoque) were added during the following century (see Jungmann, page 71, and Hermanus A. P. Schmidt, Introduction in Liturgiam Occidentalem, page 352).

After the time of Pope Gregory I (590-604), who made at least one change in the text, the Canon remained largely unchanged in Rome. Not so elsewhere. The 11th-century Missal of Robert of Jumièges, [1] Archbishop of Canterbury, interpolates the names of Saint Gertrude, Saint Gregory, Saint Ethraelda and other English saints in the Communicantes. The Missale Drummondiense inserts the names of Saint Patrick and Saint Gregory the Great. And in several Medieval French Missals the Canon contained the names of Saint Martin and Saint Hilary.

Pope Pius V's imposition of the Roman Missal in 1570 restrained any tendency to vary the text of the Canon. According to one source, in 1604 Pope Clement VIII, as well as modifying some of the rubrics, altered the text of the Canon by excluding a mention of the king.[9] In the early nineteenth century, the king was mentioned by name in England within the Canon.[10] Although other parts of the Missal were modified from time to time, the Canon remained quite unchanged, apart from this variation, from 1570 until Pope John XXIII's insertion of a mention of Saint Joseph immediately after that of the Virgin Mary.

Mystical interpretations

The renowned historian of liturgy, Adrian Fortescue, wrote that, after the Bible, the Canon of the Mass was what received the most elaborate mystical explanations. By the time they began the Canon was unquestioned as the most sacred rite of the Church and, with no regard for its historical development, they conceived mystic and allegorical reasons for its divisions, expressions, rites, just as it stood - even for its initial letter T.

These interpretations inevitably disagreed among themselves and contradicted each other, dividing the Canon where they liked - as far as possible by a holy number, such as 3, 7 or 12 - and then linked each of these divisions to some epoch of our Lord's life, or to one of the Gifts of the Holy Ghost, or - if the divisions made are 8 - to one of the Beatitudes. The arrangements are extremely ingenious and, though artificial, can be quite edifying, poetic and beautiful.

Some of the principal authors of such interpretations were William Durandus, Bishop of Mende (whose work is important as an account of the prayers and ceremonies of the thirteenth century), Benedict XIV and Csrdinal John Bona. A favourite idea is that the Ordinary to the Sanctus, with its readings, represents Christ's public life and teaching; the Canon is a type of the passion and death, and is said in silence, because, though Christ taught plainly, he did not open his mouth when he was accused and suffered. From Durandus comes the idea of dividing the Mass according to the four kinds of prayer mentioned in 1 Timothy 2:1: it is an "obsecratio" (supplication) to the Secret, an "oratio" (prayer) to the Pater Noster, a "postulatio" (intercession) to the Communion, and a "gratiarum actio" (thanksgiving) to the end. Benedict XIV and many others divide the Canon itself into four sets of threefold prayers:

  • "Te igitur", "Memento vivorum", "Communicantes";
  • "Hanc igitur", "Quam oblationem", "Qui pridie";
  • "Unde et memores", "Supra quæ", "Supplices te rogamus";
  • "Memento defunctorum", "Nobis quoque", "Per quem hæc omnia".

This gives the mystic numbers 4, 3, and 12. So again each separate expression finds a mystic meaning. Why do we say "rogamus ac petimus" in the "Te igitur"? "Rogamus" shows humility, "petimus" confidence (Odo Cameracensis; "Exp. in Can. Missæ", dist. iii). Why do we distinguish "hæc dona" and "hæc munera"? "Dona" because God gives them to us, "munera" because we offer them back to Him (Gihr, 552, n. 5). Why is there no Amen after the "Nobis quoque peccatoribus"? Because the angels say it at that place (Albertus Magnus, "Summa de off. Missæ", III, c. ix). "Per ipsum et cum ipso et in ipso est tibi . . . omnis honor et gloria" signifies in its triple form that our Lord suffered three kinds of indignities in His Passion -- in His body, soul, and honour (Ben. XIV, 227). Historically, when these prayers were first composed, such reduplications and repetitions were really made for the sake of the rhythm which we observe in all liturgical texts.

Fortescue remarked that the medieval explanations are interesting as showing with what reverence people studied the text of the Canon and how, when every one had forgotten the original reasons for its forms, they still kept the conviction that the Mass is full of venerable mysteries and that all its clauses mean more than common expressions. He added that in this conviction the sometimes naive medieval interpreters were eminently right.[11]

This article incorporates text from the Catholic Encyclopedia of 1913, a publication now in the public domain.


  1. From the very printing of the first edition (reproduced by Libreria Editrice Vaticana in 1998 - ISBN 88-209-2547-8) to the 1920 typical edition (see pages 335-349 of this printing of the 1920 Missal). This, of course, does not apply to hand missals for the use of the faithful.
  2. 1962 Roman Missal, pages 299-313
  3. This was the opinion expressed by Adrian Fortescue in the article on the Canon of the Mass that he wrote for the Catholic Encyclopedia. The electronic reproduction speaks confusingly of "the Amen before the Embolism of the Pater Noster (omnis honor et gloria, per omnia sæcula sæculorum, Amen)". The embolism follows the Pater Noster and the Amen in question is the concluding word of the the doxology that, in the 1962 edition of the Roman Missal, clearly ends the Canon of the Mass, and that comes before the Pater Noster.
  4. This Eucharistic Prayer reproduces the text of what was previously called the Canon of the Mass, but permits some phrases, such as the repeated "Per Christum Dominum nostrum", to be omitted, places the phrase "Mysterium fidei" after, not within, the Words of Institution, and adds, at that point, an acclamation by the people.
  5. This is a return to the division of the Mass indicated in the oldest Sacramentary that contains a Eucharistic Prayer or Canon of the Mass: it puts the heading "Incipit Canon Actionis" before the Sursum Corda (see Catholic Encyclopedia: Canon of the Mass).
  6. Alfred Plummer, Conversations with Dr. Döllinger 1870-1890, ed. Robrecht Boudens (Leuven University Press, 1985), p. 13).
  7. William T. Lallou, The "Quam Oblationem" of the Roman Canon, Catholic University of America Press, 1943, p. 48.
  8. Bryan D. Spinks, "The Roman Canon Missae", in Albert Gerhards et al., ed. Prex Eucharistica, Vol. 3/1, Fribourg: Academic Press, 2005, 129-43; p. 130
  9. Paul Cavendish, The Tridentine Mass
  10. The Roman missal for the use of the laity: containing the Masses appointed to be said throughout the year (1806), p. xxxiii: "cum famulo tuo Papa nostro N. et Antistite nostro N. et Rege nostro N."
  11. Fortescue, Adrian. "Canon of the Mass." The Catholic Encyclopedia. Vol. 3. New York: Robert Appleton Company, 1908. 27 Nov. 2009<>.

See also

External links

This article incorporates text from the Catholic Encyclopedia of 1913, a publication now in the public domain.

This page uses content from the English Wikipedia. The original article was at Canon of the Mass. The list of authors can be seen in the page history.