AUTHOR’S ABSTRACT OF THIS PAPER ISSUED BY 
THE BIBLIOGRAPHIC SERVICE, FEBRUARY 16 
¥ 
METABOLIC ACTIVITY OF THE NERVOUS SYSTEM 
II. THE PARTITION OF NON-PROTEIN NITROGEN IN THE BRAIN OF 
THE GRAY SNAPPER (NEOMAENIS GRISEUS) AND ALSO THE 
BRAIN WEIGHT IN RELATION TO THE BODY 
LENGTH OF THIS FISH 
SHINKISHI HATAI 
The Wistar Institute of Anatomy and Biology, and Department of Marine Biology, 
Carnegie Institution of Washington 
ONE CHART 
The prime object of the present investigation was to extend 
some observations made recently concerning the metabolic ac- 
tivity of the central nervous system of the albino rat (Hata, 
17) to the nervous system of lower vertebrates. It was my 
hope that such a comparative study might yield valuable data 
for an understanding of the complex phenomena of metabolism 
in this important organ. 
In the course of the present investigation I was able to ac- 
cumulate a considerable amount of data on the weight of the 
brain together with its water content, a study which has re- 
vealed several interesting facts which have not been yet fully 
appreciated, so that I have decided to present these data also 
in the following pages. In connection with this work, it is a 
pleasure to acknowledge my indebtedness to Dr. A. G. Mayer, 
Director of the Department of Marine Biology of the Carnegie 
Institution of Washington. Dr. Mayer not only granted me 
the privileges of the laboratory at the Dry Tortugas, but gave 
me encouragement and many helpful suggestions throughout 
the course of this work. 
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