DEVELOPMENT OF THE MONOTREMES AND CERATODUS. 121 
and it promised to os with the help of the instruments now 
at the command of the embryologist, great results. They might 
perhaps ask what, prod all, these investigations were for. In 
the early days of ‘Darwinism it was hoped to get a or 
every animal, This is still the object for which much excellent 
work is done. But now that all biologists are Darwinists, 
i shio 
in itself a great step in advance. But there are further steps to 
be made, and it is by observing the minute differences betwee 
organic beings that the morphologist hopes to discover those laws 
which form the basis of his philosophy. 
Mr. CALDWELL, in answer to a question as to whether he had 
come to any conclusion with regard to what became of the embryo 
how it becomes attached to the mother’s 
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ung were attached to the teat at all. For a week or so 
after birth sis shook of a fall is sufficient to detach the young one 
e mammary glan t was a few weeks after the first 
attachment that the lips grew over the extremity of the teat, but 
no connection actually took place between it and the mouth. B 
careful manipulation one could always extricate the lips of the 
young kangaroo from the teat. He had not personally observed 
how the embryo was actually moved into the pouch— 
considered it of sufficient importance to waste any time about. 
e could conceive no difficulty in the lips or tongue of the mother 
kangaroo placing the young, which was at least an inch long 
to hi 
when born, upon the teat. The question ee not appear m 
to bea matter of any importance—it did not form part of hi 
researches. 
e PRESIDENT conveyed the thanks of the Society to Mr. 
Caldwell for the interesting account of his researches and dis- 
coveries. 
Mr. Catpwe t states he is very anxious to find a large “sae 
of kangaroos, and would be obliged if any one knowing of 
garoo drive in actual work, no matter in what part of the Golonion, 
would inform him of the locali ity. 
