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102 Comments on Ca�adon Vaca Profiles. The position of these sections corresponds more or less to Ameghino's profile (Form. Sed., p. 83) "Rive Gauche du << R�o Chico del Chubut>> dans le tiers sup�rieur de son cours." In p. 98 the red ss. etc. at the base is probably Ameghino's #11, red ss. without fossils, referred by him to Salamanqueano. It is doubtless Pehuenche as now understood. The grey shale is probably his 9 + 10, greenish clays with siliceous concretions, Notostylops fauna, + dinosaurs; and dark clays with the Notostylops fauna. I went over a considerable part of this and saw no trace of dinosaurs. In some places (the Notostylops beds just above being here unusually rich) there are mammal bones on the surface and even imbedded in the clay- but only in the top inch or two which is cracked and is highly plastic when wet ? none in the hard shale in situ. I do not believe that the Notostylops fauna is present in these beds, which Should probably also be placed in the Pehuenche. Argiles fissilaires are totally absent as such. The rest of section BC probably corresponds to Ameghino's 7 + 8 + is true Notostylopense. Except for the rodados tehuelches, his #1, the higher members of Ameghino's section are not recognizable + probably were observed only at other localities with a more complete Tertiary series. CANADON HONDO 103 301-400 = C.S.W. FIELD BOOK CAMP 4 ? See p. 129. 301. Crocodile skull + jaw, disar- ticulated. Bird clay, as #422, see p. 124. Party. 3/7/31. 3160-61 3166 302. Frag's near + prob. assoc. with #301. Party. 3/7/31. 2 blocks. Block B from bottom of Block A contact. 3150 28907 303. Odd bird bones, etc. As #301. C.S.W. 3/7/31. 1 pack. 3167, 3188 304. Bird bones, odd. As #301. C.S.W. 3/3/31. 1 pack. 305. (crossed out: Odd bones, bird. As #301.) Turtle bones + plates. As #301. C.S.W. 3/3/31. 1 pack. 306. Odd bones, bird. As #301. 1 pack. 28671 307. Bird, odd bones. As #301. 1 pack. 3168 308. Bones, odd, bird. As #301. 1 pack. NG