326 



INDEX. 



Vorticella, 147, 151 



W 



Watchmaker's glass, 6 

 Water-bear (Macrobiotus), 279, 



285, 287 

 Water colored by Infusoria, 159 

 lost by evaporation from 

 under thin coyer, to 

 supply, 35 

 to examine objects in, 27 

 Water-lily, white (NymphEea), 48 

 Water-mites, 279 



ccDeca of, 281 

 coxs, 283 

 eggs, 284 

 eyes, 280 

 food, 284 



intestinal opening, 283 

 key to genera, 285 

 legs, 284- 

 literature, 291 

 Water-mites, markings of, 280 

 mouth, 282 

 parasitic, 284 

 preserving and mount- 

 ing', 291 

 reproduction, 284 



Water-mites,- sexes, eiternal dif- 

 erences, 282 

 tracheal openings, 283. ; 

 to examine. 281 

 ventral plates, 282 



Worms, aquatic, [73, 176, 198 

 beneath decaying bark, 



203 

 blood of, 200 

 bristles, 173, 198 

 fluid in body-cavity, 200 

 food, 200 

 habitats, 174 

 key to genera, 201 

 mouth and alimentary 



canal, 199 

 podal spines, 173, 198; 

 reproduction, 200 



Xanthidium, 72, 83 



antilopteum, 84 

 armatum, 83 



Zygnema, 102., 106 



insigne, 106 



