oo 



*rft 



1908] YAMANOUCHI—SPERMATOGENESIS AND OOGENESIS 171 



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89. TiMBERLAKE, H. G., Development and structure of the swarraspores of 

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90. Trow, A. H., Biolog\' and cytolog>' of Pyihium ullimum. Annals of Botany 

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91* , On fertilization in the Saprolegniaceae. Annals of Botany 18: 



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 92. Wager, H., The sexuality of Fungi. Annals of Botany 13 -5 75-59 7- ^899- 



93- ^ On the fertilization of Peronospora parasitica. Annals of Botany 



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94- WebbeRj H. J., Peculiar structure occurring in the pollen-tube of 2^amia. 



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95- , Notes on the fecundation of Zamia and the pollen tube apparatus 



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 97- WiLLLAiis, J, L., Studies in the Dictyotaceae. 11. The cytology of the 



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1908. 

 102. ZACHARr\s, E., Beitrage zur Kenntniss des Zellkems and der Sexualzellen. 



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EXPLANATION OF PLATES Vl-Vm 

 The figures were drawn with the aid of an Abbe camera lucida, under Zeiss 

 apochxomatic objective i .5««° N. A, i .30, combined with compensating ocular 18, 

 except figs, 34-38, 41 y 42, 46-50 drawn with compensating ocular 4» and pg. 33 

 drawn with compensating ocular 18 under higjier magnification obtained by 

 extending the tube. The plates are reduced to one-half the original sl^e. 



