CONTENTS OF No. LXXII.-New Series. 



MEMOIRS: 



VAOB 



On the Oral and Apical Systems of the Ecliinoderms. By P. Herbekt 

 Cakpenter, M.A., Assistant Master at Eton College. Part I) . 351 



On the Structure and Development of the Vertebrate Ovary. By 

 F. M. Balfour, M.A., Fellow of Trinity College, Cambridge. 

 (With Plates XVII/XVIII,' XIX) 383 



The Reproduction of Lichens and the Sexuality of the Ascomycetes. 

 By Sidney H. Vines. (With Plate'lX) . . . .438 



NOTES AND MEMORANDA: 



Recent Observations on Bofrydium Granulatum 



Motility of the Spermatozoids of Limulus 



The Early Developmental Changes in the Re|)tilian Ovuia 



Recent Researches on Bacteria . 



The Development of Calcareous Sponges , . 



[The Index to Vol. XVIII will be given in the January 

 Number of Vol. XIX.] 



. 446 



. 453 



. 454 



. 455 



. 457 



