JOURNAL OF MICROSCOPICAL SCIENCE. 



EXPLANATION OF PLATES XXI and XXII. 



Illustrating Dr. Klein^s memoir ' On the Lymphatics of 

 the Skin and Mucous Membranes.' 



Fig. 1. — Vertical section through the scalp of the dog ; the lymphatics 

 have been injected with a solution of asphalt in benzole. Magnifying 

 power about 25. 



1, the most superficial lymphatics ; 2, the lymphatics of the middle 

 strata of the corium ; 3, the lymphatics of the hair- bulbs and fat-cells ; 

 4, the subcutaneous lymphatics ; 5, the large efferent vessels. 



Tig. 2. — From a horizontal section through the scalp of the dog, showing 

 the lymphatics of the layer 1 of Fig. 1, as seen from the surface. 

 Magnifying power about 60. 

 m, mouths of hair-follicles. 

 Fig. 3. — A horizontal view of layer 2 of Fig. 1. Magnifying power about 60. 

 c, trabeculse of connective tissue ; h, hair-follicles and sweat-gland 

 tubes in transverse section. 



Fig. 4. — From a horizontal section through the skin of the cheek of a 

 child ; the lymphatics had been injected with asphalt-benzole. 



c, connective tissue separating the fat-lobules, and containing a 

 dense plexus of minute lymphatics ; f, fat-cells, and between them the 

 intercellular lymph-channels. Magnifying power about 100. 



Fig. 5. — A horizontal view of the lymphatics of layer 3 of Fig. 1. Magni- 

 fying power about 350. 



/, fat-cells ; c, fibrous connective tissue separating the fat-lobules ; 

 t, large interlobular lymphatic vessel taking up the intercellular lym- 

 phatics. 



Fig. 6. — From a section through the scalp of a new-born child. Magni 

 fying power about 350. 



c, trabeculge of the connective-tissue, cut in various directions; 

 s, sweat-gland tubes cut in different directions ; /, lymphatics taking 

 up the lymph-spaces between the gland-tubes, and between the con- 

 -nective-tissue trabeculse. 



Fig 7. — The superficial plexus of the lymphatics of the skin of the frog in- 

 jected with Berlin blue, seen under a higher power, about 300. 



b, large vessels ; c, minute lymphatic channels around the glands ; 

 a, the cutaneous glands. 



