Knowledge, 



FlO. 1. — Ordinarj Photograph of a Sparrow. Bj ilr. F. 

 Higgins, Photographer, Chard. 



Fig. 2.— The same, clectrographed by Mr. Gifford and Miss Bavlis, 

 showing bones and internal organs, but no feathers. Exposure, 

 three and a half minutes. (Februarr 25th, 1896.) 



Fig. .3. — Mouse, ventral aspect. Kleetrographed 

 by Mr8. Gifford. Exposure, live minutes. 

 (February 28th, 1896.) 



Fio. 4. — >luii>e 111 iM-oiue. Kieeirvigraplied 

 by Mrs. Gifford. Exposure, five minutes. 

 (Februnrv 28th, 1896.) 



