Optic Lobes of Foivl. 



DESCRIPTION OF PLATES XXV. -XXXV. 



Figs. 1-10 are diagrams of the brain, lateral view, to show the 

 directions of sections Ic-lOc, Id-lOd and le-lOe. 



Ib-llb are drawings of the dorsal surface of the brain. They 

 are twice natural size, except in lb, where the brain was drawn 

 under a Leitz microscope with a 1 x o})Jective and JSTo. 2 eye-piece 

 and halved in reproduction. 



la-lla are drawings of the lat(;ral aspect of the brain. They 

 are twice natural size, with the exception of la, which is 

 reproduced under the same conditions as lb. 



Ic-lOc, Id-lOd and le-lOe are sections cut in the direction 

 indicated in Figs. 1-10. They are all drawn under a Leitz 

 microscope with a 1 x objective and a Leitz camera lucida, and 

 halved in reproduction. 



