EMBRYOLOGY OF THE TURTLE. 
CHAD LER LR SF. 
DEVELOPMENT OF THE EGG, FROM ITS FIRST APPEARANCE TO THE FORMA- 
TION OF THE EMBRYO. 
SECTION I. 
THE ORIGIN OF THE EGG. 
On account of the hitherto unknown peculiarities which the earlier stages of 
growth of the Turtle’s egg exhibit, it is necessary to say a few words in reference 
to the caution which was taken to make sure that these strange features are 
perfectly normal. A young animal was resorted to, on account of the greater 
abundance of the smallest sized eggs, and also because the ovary is less opaque, 
than in the adult. Those of the latter age were nevertheless consulted also, for 
comparison, and in them it was ascertained that the process of growth is the 
same as with the younger animals. 
In order not to distort the eggs by pressure, tearing, or pulling, the ovary 
was cut out entire by severing its peduncular attachment, thus avoiding the 
necessity of touching the eggs. To prevent drying, and also that it might be 
kept in a natural medium, the ovary was laid in the serum taken from the 
cavity of the body, and brought under the microscope in a watch-glass. If, how- 
ever, the serum is left uncovered for a longer time, it evaporates and changes its 
