Thrombocyte (s) — Continued 

 count (s) — continued 

 sex, 216 

 variability, 217 

 degeneration, 38, 42, 46, 146, 164, 182, 191 



orange margin, 46 

 effect of fixation, 80, 167 



embryo, 11. 96, 98, 100, 103, 106, 115, 128, 130-133, 



158 

 binuclear, 136 

 blebs pinched off, 131 

 degeneration of, 131, 132 

 blebs, 136 

 margin, 136 



crumpled, 132, 136 

 stains with eosin, 132, 136 

 nucleus, 136 

 developmental stages, 11, 38, 134, 136 

 large embryo, 11, 136 

 medium embryo, 11, 134, 136, 160 

 small embryo, 11, 136, 160 

 differentiation, 131 



greater in later tlian in early embryo genera- 

 tions, 132 

 generations 



later embryo, 131-132 

 primary, 131 

 hemoglobin absent, 131 

 in spleen, 156 

 intravascular origin, 128 

 large, 10, 11 



medium, 10, 11, 96, 98, 100, 157 

 mitosis, 131 

 primary erythroblasts, appear later than, 130 



erythrocytes, common origin with, 130 



series, 10, 11 



structural, 130 

 sha])e, oval. 134 



time of ajjpearance. 131 

 small, 10, 11. 98, 100, 103, 106, 157 

 specific granules, 136 

 atypical, 132 



change with later generations, 132. 136 

 first appearance, 131 

 erythrocyte, compared with, 41, 42 

 fragility, evolution of, 42 

 immature. Ill, 198.200 

 early, 10, 11, 182, 186, 191, 193 

 late, 10, 11, 186, 193 

 mid-,10, 11,186, 193 

 in bone marrow, 164, 181, 186, 191-193, 198 

 in huffy coat, 232 

 in circulating blood, 41-47, 96 

 life span, 45 



lymphocyte, separation from. 233. 234 

 mature, 10, 12, 38. 42, 108, 111, 186. 191 



naked, 163, 191 

 origin 



intravascular, 128, 141 

 lymphocyte, not from, 130 

 theories, 42, 130 



Thrombocyte (s) — Continued 

 phagocytosis, 45 

 reactive, 38, 45, 46, 50 

 series, 10, 11,200 

 shape, variability, 43 

 size, 41-42, 44 

 chicken, 212, 213 



wild s])ecies, compared with, 210 

 specific granule(s), 42, 43, 80 



comparison of immautre and reactive, 46 

 in vacuole(s), turkey, 210 

 number, 42, 43 

 staining of, 233-234 

 staining 



jaims green, 43 

 neutral red, 43 

 pigeon. 210 

 typical, 38, 42 

 Thromboplastid. 42 

 Thymus, 7, 50, 115, 172, 174 

 embryo thymus, 170 



serum stained from, 41 

 granulopoietic function less than in spleen, 168 

 Hassall's corpuscles, 169 

 irradiation, plasma cells increased, 166 

 lymphojjlast, 166, 174 

 lymphocyte 



immature, 53, 172, 174 

 mature, 172, 174 

 lymphocytogenesis, 167-169, 174 

 monocyte development, not observed, 169 

 smear from thymus like that of spleen, 169 

 striated nmscle cells, 169 

 thymocytes, 167 



thymus cortex from lymphocytes, 169 

 Tissue culture, 2 

 area opaca, 41 

 lymphocyte 



degenerate, 181 

 mitosis absent, 181 

 monocyte, 68 

 osteoclast, 153 



primary erythroblast, differentiation, 116 

 primitive streak, 104, 116 

 Toryii (1930), 29 



• (1931), 29 



Towhee (Pipilo erylhroplillialmiis) , 202 



Trichloracetic acid, effect on heterophil rod, 88 



Troje (Dantschakoff, 1908b), 26 



Tufted titmouse, erythrocyte count. 218 



Turdidae. 202 



Tiirdus migra/oriiis. Sec Rubin 



Turkey 



basophil. 210 

 count (s) 

 Arneth, 220 

 differential, 219 

 domestic i Meleap;ris gallopavo) , 202 

 eosinophil, 207. 209 ' 

 heterophil. 207, 209 



270 



