1908] YAMANOUCHI— SPERMATOGENESIS AND OOGENESIS 171 



84. , Neue Untersuchungen iiber den Befruchtungsvorgange bei den 



Phanerogamen. Jena. 1884. 



85. , Schwarmsporen, Gameten, pflanzliche Spermatozoiden und das 



Wesen der Befruchtung. Histol. Beitr. 4:47-158. pi. 3. 1892. 



86. , Kerntheilung und Befruchtung bei Fucus. Jahrb. Wiss. Bot. 30: 



351-374- pk. 17, 18. 1897. 



87. , Ueber Reduktionstheilung, Spindelbildung, Centrosomen und Cilien- 



bildner im Pflanzenreich. Histol. Beitr. 6: 1-124. ph. 1-4. 1900. 



88. Thom, Ch., The process of fertilization in Aspidium and Adiantum. Trans. 

 Acad. Sci. St. Louis 9:285-314. pis. 36-38. 1899. 



89. Timberlake, H. G., Development and structure of the swarmspores of 

 Hydrodictyon. Trans. Wis. Acad. Sci. 13:486. 1902. 



90. Trow, A. H., Biology and cytology of Pythium ultimuni. Annals of Botany 

 15:269-312. pis. 75, 16. 1901. 



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



541-569. pis. 34-36. 1904. 



92. Wager, H., The sexuality of Fungi. Annals of Botany 13:575-597. 1899. 

 93: , On the fertilization of Peronospora parasitica. Annals of Botany 



14:263-279. pi. 16. 1900. 



94. Webber, H. J., Peculiar structure occurring in the pollen-tube of Zamia. 

 Bot. Gazette 23:453-459. pi. 11. 1879. 



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



of Ginkgo. Bot. Gazette 24:225-235. pi. 10. 1897. 



96. , Spermatogenesis and fecundation of Zamia. U. S. Dept. Agric, 



Bur. PI. Ind., Bull. 2:1-93. pis. 1-7. 1901. 



97. Williams, J. L., Studies in the Dictyotaceae. II. The cytology of the 

 gametophyte generation. Annals of Botany 18:183-204. pis. 12-14. 1904. 



98. Wolfe, J. J., Cytological studies on Nemalion. Annals of Botany 18:607- 

 630. pis. 40, 41. 1904. 



99. Woycicki, Z., Die Befruchtung bei den Coniferen 1-57. pis. 7, 2. 

 Warschau. 1899. 



100. Yamanouchi, S., The life-history of Polysiphonia. Bot. Gazette 42: 

 401-449. pis. ig-28. 1906. 



101. — , Sporogenesis in Nephrodium. Bot. Gazette 45:1-30. pis. 1-4. 



1908. 



102. Zacharias, E., Beitrage zur Kenntniss des Zellkerns and der Sexualzellen. 

 Bot. Zeit. 45:346-355, 3 6 2-37i- P^ 4- l88 7- 



EXPLANATION OF PLATES VI-VIII 

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

 apochromatic objective 1 .5 mm N. A. 1 .30, combined with compensating ocular 18, 

 except -figs. 34-38, 41, 42, 46-30 drawn with compensating ocular 4, and fig. 33 

 drawn with compensating ocular 18 under higher magnification obtained by 

 extending the tube. The plates are reduced to one-half the original size. 



