INDEX. 



PAGE. 



Abies ........ 156 



Achlya ......... 102-107 



Adiantum ........ 136 



Albugo ......... 96-100 



Aspidium ........ 136 



Basidiobolus ........ 76-78 



Batrachospermum ....... 116-119 



Callithamnion ........ 119-124 



Cell-cleavage in Sjnchitrium discipens .... 36-38 



Pilobolus crystallinus .... 38-41 



Cell-division in higher plants ..... 3 I- 33 



Dictyota and Stypocaulon .... 4'~43 



Cell-formation, free, in Erysiphe communis . . . 33~35 



Lachnea scutellata .... 35 



Centrosome, in Dictyota ...... 3-7 



Erysiphe . . . . . . 8-10 



Centrosome and Blepharoplast ..... 44~49 



Cephalotaxis , . . . . . . . 157 



Chara ........ 135-136 



Chromosomes in tetraspore mother-cell of Dictyota . . . 5-6 



ascus of Erysiphe .... S-n 



pollen mother-cells of Lilium . . . 17-31 



Podophyllum . . 17-31 



Tradescantia . . 17-31 



Significance of numerical reduction .... 49-60 



Closterium ........ 71 



Cocconeis ........ 75 



Coleochfete ........ 9*~93 



Collema ........ 126-128 



Cosmarium ........ 71, 72 



Cycas i4 2 -!49. ^6, 157. l6 3. 166 



Cystopus (see Albugo). 



Dasya . . . . . . . . . 124 



Diatoms ........ 73-76 



Dictyota ........ 2-6, 26 



Dudresnya ........ 119-125 



Ectocarpus ........ 65, 66 



Equisetum ........ 135 



Erysiphe ........ 7-10 



Fucus ........ 84-88 



Ginkgo . . M9-I55. J 62, 163, 166 



Glcecosiphonia ....... 124 



Gnetum ........ 168, 173 



Gymnogramme ....... 130-132 



Halidrys ........ 85 



Helleborus . . . . . .12, 158, 169-171, 173 



Hydrodictyon ........ 63-65 



vii 



