312 WHITMAN AND EVCLESHYMER. [VoL. XII. 
found in the lakes of Wisconsin. It was decided, in case the 
eggs could be found, that Mr. Allis should devote himself to 
Amia, and Mr. Whitman to Necturus. Mr. Allis knew the 
lakes and the fishermen, and was thus most helpful in direct- 
ing to favorable localities. It was not long before the eggs of 
both Amia and Necturus were found. During the first season 
only a few Amia eggs were obtained, but the young were to be 
had in great numbers. It was decided, therefore, that Mr. 
Allis should begin his study with the development of the “lat- 
eral line”? system, for which there was abundant material, and 
wait until the next season before attempting to trace the devel- 
opment of the egg. Mr. Allis became deeply absorbed in this 
study, and when the time came for collecting eggs again, the 
work had progressed to a point where it could not to advantage 
be laid aside for the tempting study of the eggs. A third sea- 
son came, and still there was no room for eggs, although a 
fairly complete series had been collected by Whitman and his 
assistant, Dr. Patten. At length the work on the lateral line 
was brought to a close; but just then Mr. Allis’s health broke 
down, and he was advised by his physician to go to Europe for 
rest and for expert treatment of his eyes. From that time to 
the present he has found it necessary to prolong his stay, but 
not without maintaining a private laboratory, and, by the aid of 
assistants, bringing another anatomical work on Amia, of great 
extent and value, to completion. Beginning with the second 
year of his absence, Dr. Ayers had charge of the laboratory in 
Milwaukee, with Eycleshymer, Strong, and Nomura as assist- 
ants, and continued the collection of Amia eggs. A large 
number of elegant drawings of the egg were made by Mr. 
Nomura, and the various stages were systematically sectioned, 
and several cases of slides were prepared by Eycleshymer and 
Strong, ready for study the moment Mr. Allis should be able 
to return. The second plate of the present paper represents 
some of Mr. Nomura’s work, directed by Dr. Ayers and Mr. 
Allis, and generously placed at our disposal by Mr. Allis. 
The material for the study of the embryology of Amia, now 
in the possession of Mr. Allis, covers all stages, and the work 
already done upon it is considerable. In order to keep this 

