INDEX. 



Abebkation, 



chromatic, 59 



spherical, 59 

 Acanis, 



scabiei, 421 



follioulorum, 422 



autumnalis, 422 



domesticus, 422 

 Accessory instruments, 110 

 Achromatism, 



discovery of, 32 

 Achromatic condenser, 



PoweU's, 113 



EoBs's, 114 



Smith's, 115 

 Achromatic microscope, 167 

 Adams, George, 



microscope of, 23 

 Adams, George, jun., 



microscope of, 24 



micrometer of, 210 

 Adjustment of light, 82 



of focus, 83 

 Advantages of polarized light, 250 

 ^pinus, 



microscope of, 34 

 Alcyonium, 



specimens of, 414 

 Algse, 406 

 Amici, 



reflecting microscope of, 35 



achromatic object-glass of, 35, 38 

 Angle of aperture, 461 



method of measuring, 464 

 Animal tissues, 



to dissect, 353 



classification of, 411 

 Animal objects, 



classification of, 411 

 Animal structures, 



to mount in Canada balsam, 311 

 Animals, 



hair of, 432 



horns of, 433 



hoofs of, 433 

 Antennae of insects, 416 

 Apartment, 



choice of, 483 



Aphides, 420 

 Apparatus, 



polarizing, 120 



for collecting infusoria, 384 

 Aquatic plants, 



to cultivate, 380 

 Aristophanes, 1 

 Asphaltum cement, 275 

 Author, 



dissecting microscope of, 359 



indicator of, 145 



Bacon, Rogek, 2 

 Baker, 



work of, 21 

 Background illumination, 194 

 Basement membrane, 442 

 Bat's hair, 467 

 Blood, 



circulation of, to view, 363 



in insects, 363 



in fish, 366 



in frog, 367 



in mammalia, 372 



specimens of in vertebrata, 365 



Bone, 



specimens of, 426 

 sections of, to make, 325 



to mount, 328 



Bonnani, 



microscope of, 8 

 Bonnet for compound body, 147 



Lister's, 147 



Leonard's, 147 

 Bottle holder, 143 

 Box cells, 296 



method of cementing, 300 

 Boxes for objects, 484 

 Brewster, Sir David, 



jewel lenses of, 26 



grooved sphere of, 29 



fluid object-glasses of, 34 

 Brooke, Mr., 



hints of, 487 

 Built up cells, 294 



