The American journal of anatomy . Figs. 5-9 shown at a. Although this egg died after developing two days,others have given normal embryos. A large number of cases ofthis type were seen in a bunch of eggs placed in a very smallbottle before cleavage and carried about in my pocket for half 182 HUBERT DANA GOODALE a day. Hertwig thinks that this type results from is quite possible that this lot of eggs were made polyspermia bythe unfavorable conditions to which they were subjected. Later cleavages show many irregularities, which I may nottake time to describe since they differ only
The American journal of anatomy . Figs. 5-9 shown at a. Although this egg died after developing two days,others have given normal embryos. A large number of cases ofthis type were seen in a bunch of eggs placed in a very smallbottle before cleavage and carried about in my pocket for half 182 HUBERT DANA GOODALE a day. Hertwig thinks that this type results from is quite possible that this lot of eggs were made polyspermia bythe unfavorable conditions to which they were subjected. Later cleavages show many irregularities, which I may nottake time to describe since they differ only in minor details fromother amphibians, especially those described by Rauber (83 and86) and Jordan and Eycleshymer (94). Some observations on the direction and rate of progress of thethird set of cleavage furrows. The third set of cleavage furrows,preceded by a deep cavity appearing at the crossing of the firstand second furrows, always start from a preexisting furrow asis true also for all other furrows excepting of course the fi
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1901
