CONTENTS OF PLATES. 



%* The degree of amplifying power used is stated at the foot of each figure in 

 diameters, or linear measure, x 500, means that the representation is 500 times 

 longer or wider, measured in one direction only, than the object itself. If the object 

 was i inch in length, the drawing would extend over 500 inches, or would be 41 feet 

 8 inches long. 



The diameter of any object can be ascertained by comparison with the scales at 

 the foot of each plate. 



PLATE PAGE 



I. Bioplasm or living matter and formed material of mildew. 



Old spores of fungi. Germ of fungi. Growth of spore... 194 

 II. Bioplasm and formed material of yeast cells under a magni- 

 fying power of 2, 800 mycelium of a growing fungus ... 196 



III. Bioplasm or living matter. Mucus corpuscle. Very minute 



amoeba magnified 5,000 diameters. Bacteria. Particles 



of bioplasm from pus, and from vaccine lymph ... ... 208 



IV. Origin of new living centres. Ova of Stickleback. 



Germinal spots with new centres, magnified 1,700 



diameters 218 



V. Epithelium in health and the changes occurring in it in 



inflammation ... 220 



VI. Formed material of epithelium. Formed material of car- 

 tilage. Relation of formed material to the bioplasm of 



the two tissues respectively 222 



VII. Cartilage showing the mode of production of the formed 

 material. Conversion of bioplasm of cartilage into formed 



material 224 



VIII. Structure and growth of bone. Bioplasm of muscle and of 



elastic tissue. Movement of bioplasm 226 



IX. Peripheral nerve cell, with bioplasm and formed material. 

 Very fine peripheral nerve fibres of muscle. Central 



nerve cell with spiral fibre 230 



X. Cilia. Structure of cilium. Cilia magnified 2, 800 diameters 240 

 XI. From nutrition of health to the increased nutrition of 

 disease. Cells in inflammation, showing mode of origin 



of pus. Bioplasm of muscle in fever 246 



XII. Distribution of nerves and capillaries to frog's skin and 



arrangement of pigment cells 252 



XIII. Distribution of ultimate nerve fibres to thin membrane of 



frog's bladder . 254 



