INDEX. 



321 



Lens, pocket, with long focus de- 

 sirable, 7 

 watchmaker's, 6 

 Lepidoderma, 182 



rhomboides, 191 

 Lepisma saccharina, 296 

 Lichens, 292 

 Light, importance of modifying, 



21 

 Lily, white water, 48 

 Limnetis, 265, 274 

 • Limnias. 221, 227 



annulata, 228 

 Ceratophylli, 228 

 Limnochares; 286, 291 

 Linden, 307 



Lingual ribbons of mollusks, 301 

 Lobelia cardinalis, seeds of, 304 

 Lophopus, 244, 246 

 Lorica of Infusoria, 134 

 Loxodes, 149, 164 

 Lunjbriculus, 201, 204 

 Lyngbya, 104 



M 



Macrobiotus, 285, 287 



Americanus, 287 



Mallow, common, 306 



Malva rotundifolia, sphseraphi- 

 des in, 306 



Maple, 307 



Measuring the object, 40 



Megalotrocha, 221, 228 



Melicerta, 221, 226 



Meridion, go, 91 



circulare, gi 



Mermaid weed, 50 



Micrasterias, 71, 76 



arcuata, 78 



Micrasterias, dichotoma, 79 



key to species, 77 

 Kitchellii, 79 

 laticeps, 79 

 oscitans, 79 

 radiosa, 77 

 truncata, 78 

 Micrometer, eyepiece, 42 

 stage, 40 

 to learn magnifying 



power by, 42 

 to use, 41 

 Microscope, books relating to, 43 

 boy's vertical, 17 

 compound, i, 8 

 Craig, 4 

 Excelsior, 5 

 . parts of, I, 8 

 simple, I 

 action of, 2 

 to focus simple, 7 

 to adjust for use, 23 

 use of not injurious 

 to eyesight, 22 

 Microscopical Society of Lon- 

 don, the Royal, 11 

 Mimul'us ringens, 307 

 Mirror of microscope, 22 

 Mollusks, lingual ribbon of, 301 

 Monkey flower, crystal prisms 



of, 307 

 Mosquito scales, 296 

 Moth, common clothes, scales of, 



296 

 Mounting, microscopical, 24 



books relating to, 43 

 Movement, Browpian, 65 

 Myriophyllum, 49 



