1 66 BIO-CHEMICAL JOURNAL 



The expenses of the above research were defrayed by a govern- 

 ment grant from the Royal Society ; to the committee charged with 

 the administration my best thanks are due. 



REFERENCES 



1. Verworn, Biogen Hypothec (Gustav. Fischer), Jena, 1903. 



2. Nencki, Pawlow and Zaleski, strchl-v.f. exp. Pathologie und Pharmacologie (Schmiedeberg). 



3. Magnus-Levy, Hofmeister't Beitrage. 



4. Frankel and Geppert, Uber die Wirkungtn der verdunnten Luft., Berlin, 1883. 



5. v. Terray, Pfl'ttger's Archiv. 65, p. 397, 1897. 



6. Bauer, Zeitsch.f. Biologic, 7, p. 63, 1871. 



