Hematopoietic organ (s) — Continued 

 placenta in monkey, 141 

 spleen, 141, 155-157, 163, 164 

 striated muscle fibers, between, 141 

 thymus. 141 



walls of major vessels, 141 

 Hematopoietic system, labile in birds, 29 

 Hemin, preparation, 231 

 Hemocytoblast, 166 

 Hemocytoblastosis, 7 

 Hemocytometer, counting chamber, 31, 88 



Wiseman method, 232, 233 

 Hemoglobin 



benzidine test, 115 



Ralph's technic, 231 

 development, tissue culture, 104 

 erythroblast, 24, 26 

 erythrocyte stages 

 polychromatic, 26 

 poor criterion for, 25 

 precocious accumulation, 129 

 independent of — 



basophilic staining, 29, 118 

 cell differentiation, 117 

 level, 214^220 

 chicken, 216 

 embryo blood, 114 

 sexes, 216 



compared, 216 

 sparrow, 211-212 

 variability, 217 

 primary erythroblast 

 extravascular, 113 

 precedes cell differentiation, 112 

 takes on, 112 

 primary erythrocyte, 117 



precocious accumulation, 104 

 similar to, 192 

 reduced after splenectomy, 29 

 technic, 231-232 



conversion factor, 232 

 wavelength, 231 

 thrombocyte, absent from early embryo, 131 

 Hemokonia 



relation to serum granules, 93 

 what is included, 93 

 Hemorrhagic syndrome, 45 

 Heterophil (s), 73-74, 83-89 

 abnormal cell, 87 

 adequacy of staining, 195 

 artifact, 73, 74, 87-89 



bone marrow, 142, 144, 146, 154, 155, 182. 188. 



194-196 

 clumping, 154 



compared with eosinophil, 83, 87-88, 90, 207, 208 

 count(s) 



Arneth, 84, 85 



birds, except chickens. 220-221 

 relation to mortality, 85 

 sex values, 220 

 bone marrow, 200 

 dominant cell, 199 



Heterophil (s) — Continued 

 count(s) — continued 

 chicken, 216, 219 

 duck, 216, 219 

 embryo, 114, 133 

 goose, 216 

 hemocytometer, 233 

 pheasant, 217 

 pigeon, 217, 219 



diurnal rhythm, 220 

 turkey, 219 

 developmental stages, 74, 86, 193-197 



terminology, 194 

 duck, 207, 208 

 effect of — 

 citric acid, 88 

 irradiation, 73, 86 



Petrunkevitch No. 2, 80, 83, 195, 209 

 evolution, 73 

 granules 



difference from serum, 41, 89 

 magenta, 86, 195 

 mesomyelocyte, 154 

 on erythrocyte, 146 

 granuloblast, 10, 12, 74, 86 

 immature, 74 

 index, Arneth, 84, 85. 90 



mature, 10, 12, 73-74. 80, 83-86. 111. 144. 146. 154, 



155, 163, 172, 182. 188, 191. 200 



mesomyelocyte, 10. 12, 74, 86, 144, 146. 154. 158, 



160. 188. 191. 195. 200 

 metagranuloblast, 10. 12, 188. 191. 200 

 metamyelocyte, 10, 12, 142, 155, 188, 195, 196, 200 

 nucleus 



chromophobic band, 20, 32, 87 

 criteria for counting lobes. 84 

 lack of staining. 83. 90. 195, 207 

 promyelocyte, 10, 12, 74, 86, 142, 154, 160, 170. 188, 



195. 200 

 ratio to eosinophils 

 guinea hens, 207 

 kingfishers, 207 

 mallard ducks, 208 

 rod( s) 



arrangement in cell. 74 

 artifact, 73, 87-89 

 as debris 



erythrocyte, 146 

 osteoclast, 198 

 central granule, body. 86. 89, 195. 210 

 absent. 86, 89 

 replaced by vacuole, 74 

 significance. 83 

 development, 195 

 dissolved in cytoplasm, 74, 83, 87, 88. 89, 90 



significance, 83, 88 

 duck, 207 

 effect of — 

 citric acid, 88 

 fixation, 88 

 formalin, 88 

 malarial parasite, 89 



256 



