Transactions and proceedings of the Royal Society of South Australia (Incorporated) . Fig. 13. Three stages in the development of the pad at the base of the first pedal or digit. A, 50 mm. B, 80 mm. C, 105 mm. The Pes (see figs. 11, 12, 13).—The digital formula is 4>5>2,3>1; the syndactylous toilet digits being relativelyfar longer in the early stages. Apical pads are present andstriated. Interdigital pads striated, but the striations are 130 somewhat ill defined in older embryos. The point of out-standing interest is the fusion of interdigital pad 1 with thethenar pad, and the progre
Transactions and proceedings of the Royal Society of South Australia (Incorporated) . Fig. 13. Three stages in the development of the pad at the base of the first pedal or digit. A, 50 mm. B, 80 mm. C, 105 mm. The Pes (see figs. 11, 12, 13).—The digital formula is 4>5>2,3>1; the syndactylous toilet digits being relativelyfar longer in the early stages. Apical pads are present andstriated. Interdigital pads striated, but the striations are 130 somewhat ill defined in older embryos. The point of out-standing interest is the fusion of interdigital pad 1 with thethenar pad, and the progressive diminution of the the 80 mm. and the 105 mm. stages considerablereadjustment takes place in the disposition of the sole in theregion of the base of the first pedal digit (see (B) and (C) infig. 13). Professor Collett has described in an embryo about100 mm., from snout to vent 2 pads at the base of the bigtoe, but gives no description of the pads in the adult. Thischange is presumably to be correlated with the loss ofopposibility of digits 1 and 2 to digi
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscience, bookyear1912
