Hln'nx.KAIMIY. 



341 



Pig. 61.-SpIracle of insect, magnified T5 diame- Fig. 2.-Elliptic blood-cells of frog, magnified 

 tere - 250 diameters. 



Pig. 63. Ultimate muscular fibre, magnified 200 Fi 

 diameters. 



ve . 8els of bauaDfli mil g u i fled 50 

 diameters. 



Pig. 68. Woody fibre <>t pine, magnified 60 di- 

 ameters. 



*- Mucous nieinbrnne ofthe fioniach of a 

 carnivorous beetle, magnified 00 diameters. 



