0OE"TEE"TS. 



FAOE 



Note 5 



The Mechanism op Instantaneous Photography. By William 



Detmis Marks, Ph. B.C. E 9 



Materials for a Memoir on Animal Locomotion. By Harrison 



Allen, M.D 35 



A Study of some Normal and Abnormal Movements Photo- 

 graphed BY Muybridge. By Francis X. Dercum, M.D., Ph.D. 103 



3 



