. The American journal of anatomy. ^- ^ ^^^i^^ ^i^cida drawing of an operated chick of 90 hours incubation(57 hours after operation). Fig. 9 A free-hand drawing of a chick of Ak days incubation in which thebreaking-up of the cai)illaries in the area pellucida is quite pronounced. Oper-ated at 33rd hour of incubation. DEVELOPMENT OF VESSELS WITHOUT HEART 191. Fig. 10 A camera lucida drawing of a section of the area pellucida of a chickof 8 days incubation (7 days after operation) which shows small lakelets of bloodformed by the breaking-iip and retraction of the capillaries. Enl. 24 X.

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Keywords: ., bookauthorwi, bookcentury1900, bookdecade1910, booksubjectanatomy