JOURNAL OF MICROSCOPICAL SCIExVCE. 



DESCRIPTION OF PLATE III, 



Illustrating Dr. Mcintosh's paper on Experiments on Young 



Salmon. 



The figure represents in outline the general structure of a salmon one day 

 old, reduced from a drawing nineteen inches in length. 



Fig. 

 a. — Ventricle. 

 b. — Auricle. 

 c. — Caudal capillaries. 

 d. — Venous dilatation at tail. 

 e. — Cardinal vein, 

 e' — Branches of the latter. 

 f. — Aorta. 



/'. — Larger branches of the latter. 

 /". — Smaller branches. 

 g. — Vitelline vein. 



h. — Curving vessel of the pectoral fin. 

 i. — Branchial coils. 



1c. — Visceral (portal) vein lying beneath the digestive tract. 

 A B. — Section beyond the chorda. 

 B c. — Section within the bend of the chorda. 

 D. — Outline of portion cut from the fatty fin in its early state. The 



dotted internal lines represent the condition of the parts 



some hours afterwards. 



