EXTRACTING EMBRYOS. 



45 



them, are shown in the accompanying figures (6 

 to 8), taken by permission of Prof. S. F. Bairdfrom 

 the Smithsonian "Circular." If they cannot be 

 readily purchased, a clever mechanic ought to be 

 able to make them or their substitutes. 



1 am able to give, also, a figure of a queer pair of 



Fig. 8. 



embryotomy scissors designed to aid us by accom- 

 plishing the same work through an aperture of less 

 size than will admit the other cutting-tools. It is the 

 suggestion of Dr. W. J. Hoffman, of Washington, 

 who explains it in the following memorandum : " The 



