INDEX 



;3U5 



Cedar oil, refractive index, 103 

 Cell layers, origin, 232 

 Cell theory, 215 

 Centering collar, 157 



condenser, 80, 154, 256 



mirror, 138 



objectives, 126, 140 



sleeve, 205 

 Chance, colored glass, 77, 176, 204 



cover-glasses, 178 

 Chara, antheridia, 231 

 Chevaher, achromatic objective, 197 

 Chironomus, chromosomes, 238 

 Chrom-acetic-formalin, preparation, 



244 

 Chromomeres, counting, 217 



Galtonia, 218 



ultimate, 219 



visibihty, 241 

 Chromosome bivalents, nodes of, 222 

 Chromosome theory of inheritance, 



216 

 Chromosomes, Allium, 225 



amphidiploids, 225 



Canna, 226 



chains in Oenothera, 227 

 in Rhoeo, 227 



deficient, 228 



extra, 228 



grasshopper, 235 



haploids, 219, 228 



measurement of, 144 



non-reduction, 224 



quadrivalent, in Datura, 224 



segments of, 219 



Tradescantia, 229 



triploid hyacinths, 221 



trivalent, in Canna, 226 

 in Datura, 224 

 in hyacinths, 223 

 in tomato, 224 

 in Tuhpa, 224 



unequal homologues, 237 

 Circle, condenser, 29 



objective, 29 

 Circles, eyepiece, 30 

 Circulation of blood, 240 



of cytoplasm, 235 

 Citrus, polyembryony, 230 



Cleavage of ova, 238 

 Coles, book on the microscope, 210 

 bull's eye, 71 



center stop for dark field, 93 

 centering mirror, 138 

 dry condenser, 86 

 fluorite objectives, 126, 158 

 illumination, 67 

 lamp flame, 68 

 nigrosin smear, 234 

 nosepiece, 141 



objectives on nosepiece, 140 

 one-sixteenth objective, 118 

 paper on spirochsetes in dark 



field, 212 

 paraffin oil, 103 

 rackwork on drawtube, 56, 144 

 red-stained bacteria, 188 

 stained spirochsetes, 102 

 star test, 173 

 twenty objective, 118 

 Color screens, 75 

 Colors, complementary in dark field, 



95 

 Condenser, accessory lens for, 85 

 achromatic, 85 



dark field with, 253 

 achromatic-aplanatic, 85 

 adjusting for lamp-distance, 3 

 adjustment, 89 

 aperture, 87, 256 



circle, 90 

 aplanatic, 85 

 aspheric, focusing for color, 91 



with green screens, 85, 253 

 bicentric, dark field with, 94, 254 

 cardioid, dark field with, 94, 254 

 care of, 176 

 Cassegrain, dark field with, 95, 



254 

 centering, 80, 154, 205 



by fight circle, 256 

 circle, 29 



corrected, and small source, 249 

 correcting, 87 

 dark-field, 93, 202 



advantages of, 96 



centering, 95 



with liigh apertures, 95 



