INDEX. 



1181 



Yolk-Blastopore, Position of, as de- 

 termined by the Size of the 

 Vitellus, 978. 



Z. 



Z., 145. 



Zacharias, E., Structure of the 

 Nucleolus, 821. 



, O., 115. 



, Amoeboid Movements of Sper- 

 matozoa of Polypjiemus pediculus, 

 239. 



, Experiments on Formation of 



Pseudopodia, 1014. 



, Fauua of the Pieces of Water of 



the Riesengbirge, 4.S2. 



, Nephridia of Microstoma lineare, 



813. 



, Relationship of Rotifers and 



Nematodes, 1006. 



, Reproduction and Development 



of Rotifer vulgaris, 249. 



Ziihlbruckner, A., Lenticels, 825. 



Zawarykin, T., Study of Fat Absorp- 

 tion in the Small Intestine, 731. 



Zeigler, E., 928. 



Zeiller, R., Affinities of Laccopteris, 

 681. 



, Fructification of Sigillaria, 493. 



, Tracks of Insects resembling the 



Impressions of Plants, (J35. 



Zeiss, C, Dissecting Microscopes with 



Briicke Lens, 319. 

 Zenger, C. V., Double-sided Slide, 



908. 

 , Monobromide of Naphthalin and 



Tribromide of Arsenic, 909. 

 , Mounting for Diatoms, to view 



them on both sides, 161. 



, New Mounting Medium, 377. 



Zentmaj^er's Abbe Condenser, 710. 

 Ziegler, H. E., Development of Cyclas 



cornea, 625. 

 Zimmermaun, A., Behaviour of the 



Optical Axes of Elasticity of Cell- 

 walls under Tension, 476. 

 , Causes of Anisotropy of Organic 



Substances, 487. 



, Spiral Cells of Nepenthes, 1023. 



, O. E. R., 534. 



Zinnia, Sexual Characters in, 267. 

 Zoocytium of Ophrydium versatile, 



Cliemical Composition of, 818. 

 Zopf s (W.) Myxomycetes, 690. 

 Zschokke, F., Parasites of Fresh-water 



Fishes, 647. 

 Zukal, H., Structure of Lichens, 687. 

 Zygnemacese, Bisexuality of, 1038. 



, Hibernation of, 284. 



, Sexuality in, 285. 



Zygospores of Mucorini, 505. 

 Zymosis, Organisms Productive of, 



693. 



IXWDCbf: PBINTKD BT WILLIAM CLOWES AND SUMS, LIHITBD, STAMFORD STRKET 

 AND CIIAIIINO CROSS. 



