84 ON THE SUPEAKENAL BODIES IN FISHES. 



Reference-letters to figs. 41-49 (Plates XIII., XIV.). 

 ad., adenoid tissue of kidney between the tubules ; al.io., walls of alveoli ; hld.c, 

 blood-corpuscles ; c, capsule ; cap., capillary blood-vessels ; c.sp., central space in 

 alveoli; (Z.c, cells resemblino- " demilune " cells ; e.c, elongated cells ; m., nuclei; 

 n.c, nerve-cell; n.net., nuclear network; nl., nucleoli ; jj.c, branched pigment- 

 cells; pr., granular protoplasm; s., septa; str., fibrous stroma; t., tubules of 

 kidney; v.s., venous sinuses; x, cells seen to be overlapping. 



Fig. 41. Section of a suprarenal body of Acanthias vulgaris, showing the capsule, 



trabeculae, stroma, protoplasm, and various-sized nuclei. Zeiss H. immers. 



E. P. 2. Drawn with Zeiss's camera lucida. 

 Fig. 42. Section of a suprarenal body of Sci/llium caniciila, from about the middle 



region of the abdominal cavity. In this section are seen a large nerve-cell 



and several branched pigment-cells. Zeiss H. immers. E. P. 2. Camera 



lucida. 

 Fig. 43. Section of the interrenal body of Jtaja clavata, showing alveoli of various 



shapes and sizes, filled with cells, many of them elongated. Zeiss 



apochrom. -^^" water immers. Camera lucida. 



PLATE XIV. 



Fig. 44. Section of a suprarenal body of Acipenser sturio. The body was put into 

 osmic acid about 12 hours after death, and sections were cut with the 

 freezing microtome on the following day. The alveolar arrangement is well 

 seen and the cell-outlines are admirably preserved. Zeiss H. immers. 

 E. P. 2. Camera lucida. 



Fig. 45. Section through a portion of the kidney and the two suprarenals of Conger 

 conger, shoM'ing the renal intertubular material, the low power appearance 

 of the suprarenals, and their connexions with the kidney. X 70. 



Fig. 46. Portion of suprarenal of Conger from same slide as preceding, showing the 

 alveoli containing a regular tier of irregular cubical cells, and central spaces 

 containing nuclei and shreds of cells. Zeiss apochrom. lY' water immers. 

 Camera lucida. 



Fig. 47. Section of suprarenal of Anarrhichas lupus, showing a curious serpentine 

 anangement of the alveoli. Zeiss -jV' apochrom. water immers. Camera 

 lucida. 



Fig- 48. Separate cells of suprarenal of Pleuronectes limanda. Zeiss apochrom. -^" 

 water immers. Compens. 0'18. 



Fig. 49. Separate cells of suprarenal of Mullus harbatus. Shows the two kinds of 

 cells. Same power as fig. 48. 



