SUBJECT INDEX 



Haemin, i^i 



Haemocytoblasts, in leucaemic spleen, 64 



Haemolysis, 187 



Haploidy, 53-55 



Harlequin lobe of testis, 1 17 



Heart, extracts of adult growth promoting, 



174 

 Hemiptera 



diffuse spindle attachment of, 92 



effect of X-rays on, 197 

 Heparin, effects 



Chaetopterus egg, on, 140, 194 



isolated cytoplasmic particles, on, 194 

 Heredity 



chromosome theory of, 31 



relation to meiosis, 70 

 Heterochromatic granules Feulgen-positive, 



7. 30= 32, 33. 

 Heterochromatin, 64 



alkaline phosphatase in, 50 

 associated with nucleoli, 9 

 basic proteins and, 45 

 genetical properties of, 45 

 lipoids in, 51 



objections to use of word, 47 

 susceptibility to breakage, 45 

 synthetic activities of, 14 

 Heteroploidy, 37, 53-55 



origin by mitotic modifications, 61 

 Heteropycnosis, 43-47, 118 

 negative, 44 

 positive, 44 

 Hexa-nitrodiphenylamine, as mitotic 



inhibitor, 194 

 Hexose, presence in DNA disproved, 6 

 Histidine, 12, 49 

 Histogram 



chromosome size, of, 62 

 intermitotic periods, of, 88 

 nuclear size, of, 57-59 

 Histones, 47-48, 103-104 

 attacked by pepsin, 104 

 cytochemical localization of, 12 

 effect on absorption spectrum of tyrosine, 



12 

 removal by 

 o-inHCI, 36 

 HgSO^, 104 

 resist trichloracetic acid, 104 

 vary in different tissues, 48 

 Holomastigotoides, 86, 92, 100, 133, 134 



anaphase in, 95 

 Hormones, and growth, 168-170 



interactions of, in castrated mice, 168 

 Humbertiella, 117 



Hyacinthus, formation of spindle in, 72 

 Hydrostatic pressures, high, 141, 200 

 effects on 



amoeboid movement, 138 

 cleavage, 138 

 gelation, 138 

 mitotic spindle, 195 

 narcosis, 194 

 centrifugation under, 139, 140 

 co-hydroxy-laevulinic aldehyde, 4, 7 

 Hypotheses, of chromosome movement, 

 115-116 



Illumination, domestic, progress in com* 



pared with cytology, 99 

 Inclusions, cytoplasmic, 20-24, ''9 

 Indolylacetic acid, 165, 166 

 Indolylbutyric acid, 166 

 Injury, cell, comparable changes at mitosis, 



135 

 'Innere Teilung', 60 

 Insulin, 171 

 Interphase, 20-65 



duration of, 82, 88-90 



nucleus in, 30-65, 77 

 growth of, 56-61 

 Interzonal region of spindle, 77, 144 



chromosome sheath, 92 

 Intestinal crypts, DNA turnover rate in, 



17 

 Inverse squares, 119 



spindle birefringence, in, 121 

 lodoacetamide, effects on mitosis, 191, 195, 



196 

 lodoacetate, sodium 



effect on erythrocyte permeability, 185, 



187 

 mitotic inhibitor, as, 185, 186, 196 

 Interzonal region of spindle 

 expansion of, 115, 144 

 RNA in, 103, Plate XII 

 secondary birefringence in, 144 

 Isoelectric point, 52 

 Isoleucine, 49 



Isotopic methods, nucleic acid synthesis 

 studied by, 16, 17, 200 



Janus green 



blood anticoagulant, as, 194 



inhibitor of cleavage, as, 1 94 



mitotic gelation, of, 194 



stains mitochondria, 23-24 

 basis of reaction, 23 

 Japanese school of cytology, 71 



Karyoplasmic ratio, 53 

 Kinetochore, see centromere 



Laevulinic acid, 4, 5 



Lamp-brush chromosomes, 43, 96, 98-100, 

 106 

 formation of nucleoli by, 42 

 structure of, 98-100 

 Latent period, in action of embryo extract, 



178 

 Leptotene, 95, 102, 104, 112 

 Leucine, 49 



Leucobase, of Janus green, 23 

 Leucocytes 



Amphibian, 1 51-152 

 centrioles of, 108 

 cultures, in, 170-172 

 degenerating, in pus, i 

 possible functions of, 172 

 Light, influence on mitosis in plant roots, 91 

 Light-scattering, at egg membrane, 140 

 Lilium, anthers 



meiosis in isolated, 75 

 pollen grain of, 134 

 DNA content, 37, 102 



225 



