220 
G. ARNOLD. 
Fig. 12. — A yolk-cell containing fat- and yolk-globnles. Yolk 
coloured blue. 
Fig. 13. — Several columnar cells and one gland-cell from a Planarian 
starved for five days. Normal appearance. 
Fig. 14. — Mesh work of the parenchyma, showing a free fat-globule 
and two amoeboid wandering cells, also containing fat. some of which is 
undergoing alteration. 
Fig. l.'i. — Excretory and pigment granules (18 compens. -ocular). 
Fig. Ifi. — An empty gland-cell lying at the base of two columnar 
cells, cf. fig. 11. 
Fig. 17. — A parenchyma cell containing excretory granules massed 
together in vacuoles. 
/. Osmicated fat. nf. Fat very much altered and partially 
absorbed. (. Ingested leucocyte. he. Ingested blood-corpuscles. 
hac. Bacteria, g. Goblet-shaped gland-cell. 
