CLEAVAGE PLANE AND ENTRANCE POINT OF SPERM. 25! 



turc of the o\ < -\ tc of Xcreis at the time of insemination must be 

 the same in all meridians. This, I K-lu-ve, has an important 

 bearing on theories of germinal areas in tin- cytoplasm, of pre- 

 localization, and of precocious segregation. The determination 

 of bilaterality follows fertilization. 



I.ITEKATrKK < I I FD. 



Agassiz and Whitman, C. O. 



'84 On tip I ) -. < lopment !' laui. I-'i-h Eggs I'n-limmaiy N.>'. 



I': . Acad. An -.XX. 



Van Beneden et Julin, J. 



'84 I. a -I-UIIH nt.aion chez les A-cidii-: rapp"i; .ni-.ition de 



I. live. Archive de Biologic, V. 

 Castle, W. E. 



'96 The Early Embryology of dona Flnninv: 1 Hull. Mus. 



' mp. Zool., XXVII. 

 Clapp, C. M. 



'91 Some Points in the Development of the I ...id-Fi-h. .|.>m. M..iph.. \'. 

 Conklin, E. G. 



'97 I lie Embryology of Crepidulti. Jmir. Mr|>li.. XIII. 



"04 The Organization and Cell Lineage of 1 I l^m. A>al. x 



<if Phil.. XIII. 

 Harper. E. H. 

 '04 r*he Fertilization and Early Development of thi r i Am..I"iii. 



it., III. 

 Jordan, E. O. 



'93 I ![ II. i 1 n>; and Development <>t t J"iu. M-irpli.. \'1II. 



Jordan, E. O., and Eycleshymer, A. C. 



'94 The Cleavage of Amphibian Ova. 

 Lillie, F. R. 



'06 Ol >ns and Experiments com c-niinv; tin- Kli-iiinituiy I'lii-nnim-n 



Development in Chu l-m I \ / .1.. III. 



"ii ^! idii "i Fertilization in A I rtical ( h.mui-- in ili> 1 



II. I Fertilization. Jour. M.'ipli.. XXII. 



Moszowski. Max. 



'02 i i Einfluss der SC!I\M ; luinu uml Eih.iltu 



bilateralen Symmetric des F h. Mik. An.it.. IX. 



Newport, G. 



'51. '53. '54 *^ n lnt -' Iinpri'Kiuiti'Mi ni the ( >vum in tin- Amphibia. Phil. 



l\ -.>c. London. 

 Roux, W. 



'85 Britriige zur Enlwickelu: .uiik dr- Embr\n. Nr. {. 1 ebei lic 



.innuing der Hauptrichtungen -I- I ; licnibryn im Ki uml ulit-r die 

 erste lli.-il-,. i roschei<. !'.: -lauor iirztl. V-it-> hr. 



'87 Nr. .}. I 1 iiimiinii ilT Mrdianebene des Froschembryo durch de 



pulatinii-iii-htuiiK di_< Eikcrm-s und ilt-s Sp.-i inakn in -. Anhiv Mikr. 

 An.it.. XXIX 



