2 Stop« a ainl Pujii, The nutritive relationa of the Burroonding tisuues etc. 



Birase 1 ) having seen similar protein grannies in the jackel 

 cella and in the egg cells of Ginkgo thoughl thal the protein in 

 the egg came as snch Erom the jackel cells. thongh li»' figured 

 wide pits in the egg cell wall, each closed \>\ a simple membrane. 

 In Cycas [keno 2 ) thoughl thal the nuclei of the jackel cells 

 become homogeneous and break oft pari of their snbstance which 

 enters the egg cell. As he <li<l noI observe the "aieve" perforations 

 in the egg cell wall described by Goroschankin he holds the 

 virw thal there is ;i wide, open commnnication between the egg 

 cell and the sheath cells through which he figures this protein 

 snbstance passing. 



Blackman 8 ) and, at one tinie Chaniberlain 4 ), t'ollowed 

 Strasbnrger's view and considered the „Hofmeister Körperchen" 

 to be merely protein vacuoles. 



Arnoldi 5 ) investigated the origin of these bodies in the 

 Abietineae, conclnding that they are the nuclei of the jacket 

 cells which have passed bodily into the egg. According to hini 

 thepe nuclei are replaced in the jacket cells by others Coming in 

 from the snrronnding endosperm cells. In Cephalotaxus and Dammara 

 he describes protein originating in the nuclei of the sheath cells 

 and passing into the egg. He brings together a series of 

 Gymnosperms and states that in all cases the proteiu vacuoles and 

 granules in the egg arise directly or indirectly from the nuclei of 

 the jacket cells. Arnoldi's resnlts however have not been continned 

 by Murril 6 ) in Tstiga, Ferguson 7 ) in Pinus, Miyake 8 ) in 

 Picea and Abies, Land") in Thuja, or Sludsky 10 ) in Juniperus, 

 and were even denied by Strasburger " }. 



1 ) Hirase, S., .,Etudes s. 1. fecondation et l'embryolog. d. Ginkgo biloba. 

 (Journ. of the Coli, of Sei. Imp. Univ.". Tokio. Vol. VIII. 189;",. Plate XXXI, 

 fig. 6 and p. 12.) 



2 ) Ikeno, S., „Untersuch, ü. d. Entwick. . . . b. Cycas revoluta". (Jahrb. 

 f. wiss. Bot. XXXII. 1898. p. 557-600. Plate 8 fig. 7 b.; 



3 ) Blackman. V. 11.. „The cytolog. features of fertiliz. and related 

 ]>henom. in Pinus sylvestris". (Phil. Trans. Boy. Soc. Lond. Ser. B. 190. 



1898. p. 395-642. see p. 417.) 



4 ) Chaniberlain, C. J., ..Oogenesis in Pinus Lariciö". (Bot. Gaz. 27. 



1899. p. 268 to 280. see p. 273.) 



6) Arnoldi, Vv., „Beit. z. Morph, d. Gymnosp/'. IV. (Flora, Bd. 87. 



1900. see p. 4.) 



8 ; Murril, \V. A., „The develop. of the Archeg. and fertiliz. in the 

 Hemlockspruce (Tsuga canadensis). (Ann. of Botany. 14. 1900. p. 5 — 83.) 



7 ) Ferguson. M. C. „Contrib. to the know. of the life hist. of Pinu8 u . 

 (Proc. of the Washington Acad. of Sei. Sept. 1904. Vol. VI. p. 1—202. 

 see p. 104.) 



8 ) Miyake, K., „On the develop. of the sexual organs and fertiliz. in 

 Picea excelsa". (Ann. of Bot, 17. 1903. p. 351.) „Contrib. to fertiliz. and 

 embryog. of Abies bahn nun- . (Beiheft, z. Bot. Centralbl. 14. 1903. p. 134.) 



* 9 ) Land, W. .1. G. „A morph. study of Thuja". (Bot. Gaz. 1902. 

 p. 249—258.) 



"') S 1 nd s k v . X.. „Ueber d. Entwicklungsgeschichte d. Juniperus communis". 

 (B. d. D. Bot. Ges. Bd. 23. 1905. Heft 5. p. 214.) 



n ) Strasburger, E., „Ueber Plasmaverbindungen pflanzlicher Zellen". 

 (Jahrb. f. wiss. Bot. Vol. 36. 1901. p. 550—552.) 



