Crowfoot will be of real service to the student who is not familiar with Syriac, and who wishes to see for himself the singular deviations of this text from the Textus Receptus. Take _e.g._ the additions made to the text of Matthew in chap. xx. 28, where a passage resembling one in Luke vii. is introduced. The Cur. Syriac here is sustained by the Codex D. Very frequently, however, it corresponds in its omissions with the most ancient MSS. and with the old Latin, as in Matt. xx. 22, 23. It is profoundly interesting, moreover, in that it retains of Mark's Gospel only a portion of the very closing passage, which is not to be found in Codex B. or in א. Partly in consequence of this testimony Dr. Tregelles leaves the passage as an authentic appendix to the text of the Gospel of St. Mark. We see that Mr. Crowfoot and Dr. Tregelles sometimes differ, as we might expect them to do, as to the Greek equivalent which they suppose most likely to have been the exemplar of the Syriac, but they do not seriously differ as to the testimony it bears to a particular reading. In Matthew xi. 23, the Textus Rec. reads καὶ σὺ Καπερναοὺμ ἡ ἕως τοῦ οὐρανοῦ ὑψωθεῖσα, κ.τ.λ. Mr. Crowfoot gives in place of ἡ, οὐχ. Dr. Tregelles on the authority of B, C, D, the Vulgate _a, b, c_, and Syr. Cur., gives μὴ, and makes the clause interrogative. But to proceed with Dr. Tregelles' labours. The various collations made by him need not be exhaustively enumerated, though special attention should be called to the extraordinary effort and patience which was required by him to form an accurate estimate of the readings of the Codex Colbertinus, called 33 in the Gospels, and 13 in the Acts and Catholic Epistles. The leaves of the vellum have been in places sodden with damp and stuck together. The consequence was that when separated, 'the ink adhered to the _opposite_ page rather than to its own, so that in many leaves the MS. could only be read by observing how the ink had _set-off_, and thus reading the Greek words _backwards_.' At Paris, Leipsic, Berlin, Dresden and Wolfenbüttel, Dr. Tregelles continued his patient research, and came to such discoveries as that the Codex Sangallensis (Δ of the Gospels), and Codex Boernerianus (G of St. Paul's Epistles) were the severed portions of the same book. At Dublin, the difficult palimpsest fragment (Z) was deciphered after submitting the vellum to a chemical process, and Tregelles was able to restore the portions which had been left blank in the edition of this fragment published by Dr. Barrett.