LIST OF WOOD-ENGRAVINGS. 



no. PACT 



1. Vegetable cells from a young shoot of Solanum tuberosum . . .31 



2. Cartilage-cells from the margin of ossification of growing cartilage . . 32 



3. Different kinds of cells and cell-formations, a. Hepatic oelL b. Con- 



nective-tissue corpuscle, c. Capillary vessel, d. Stellate cell from a 

 lymphatic gland, e. Nerve-cell from the cerebellum . . . .35 



4. Formation of vegetable cells, according to Schleiden . . . .86 



5. Pigment-cell (from the eye), smooth muscular fibre-cell (from the intes- 



tines), portion of a nerve-fibre with a double contour . . . .39 



6. Cartilage from the epiphysis of the humerus of a child . . . .41 



7. Cortical layer of a tuber of Solanum tuberosum 45 



8. Longitudinal section of a young shoot of Syringa 47 



9. Pathological proliferation of cartilage from a costal cartilage . .48 



10. Young ova from the ovary of a frog 49 



11. Cells from catarrhal sputa (pus- and mucus-corpuscles, and a pigment- 



cell) ' . 49 



12. Diagram of the globular theory . 58 



13. Diagram of the investment- (cluster-) theory ... . 58 



14. Cylindrical epithelium from the gall-bladder ... . . 58 



15. Transitional epithelium from the urinary bladder 59 



16. Perpendicular section through the surface of the skin of a toe (epidermis, 



rete Malpighii, papillae) 60 



17. Diagrammatic representation of a longitudinal section of a nail in normal 



and pathological conditions 65 



18. A. Development of sweat-glands. J?. Portion of the duct of a sweat- 



gland 68 



