INDJ:\ 



Velten's electrical hypothesis of proto- 

 plasmic movement, 2?'.*, 280 ; on 

 movements of granules, 322 ; (in 

 the nature of protoplasm, 222, 

 223 ; observations on protoplasmic 

 structure, 16f> ; on streaming in 

 plant cells, 291 



Venetian soap for assisting the forma- 

 tion of foam in oil, 1:', 



Viscid external layer of Amcelw, 314 

 nature of protoplasm. 22f, 22(> 

 oil, how to correct, 18 ; foam pro- 

 duced from, 20, 44 ; transparency 

 of, 21 



VorticeUa, structure of, 88, 89 



WAKKER on streaming in plant cells, 



291 

 \Vallieh on the currents in Amceboe 



and on contractility, 270 



Water-drops 



379 



from ether or 



aleohol, 296-305 



\\'elier on streaming in plant cells, 



291 



Went on vacuoles, 2-'51 

 White of e^ r , its inlliien.-e on f.inua- 



tion of foam in oil, 1 1 



Xvi.oi, and soap solution, t<>am pro- 

 duced from, 6 



ZACH.MMAS. E. , on structure of Bac- 



teria, etc., 120, 121 

 Zoochlorelhe in /'</"/////.->/ firiills, 311 



footnote 



Zoospores of }'iii/i-/i,-,-tii, alveolar layej- 



in, 238 

 Zoothu in n in ui, endoplasm of, 89 ; stalk 



muscle, 90 

 Zooxanthelhu in Foraminifera, 191 



THE END 



Printed by R. & R. CLARK, Edinburgh 



