JOURNAL OF MICROSCOPICAL SCIENCE. 



EXPLANATION OF PLATE IX, 



Illustrating Mr. Sydney H. Vines* Account of Professor 

 Strasburger's Observations on Protoplasm. 



Figs. 1, 2, 3, 4, and 6, after Strasburger. 



Fig. 5, after Hofraeister. 



Figs. 1 — 3, and 6, Vaucheria sessilis. 



Fig. 1. — Nearly mature zoogonidium in its case. Prepared with alcohol. 

 X 240. 



Fig. 2. — Anterior portion of same, in fresh state, x 600. 



Fig, 3. — A portion of the ectoplasm with cilia, osmic acid, x 600. 



Fig. 6. — Portion of a zoogonidium which had been induced to form a 

 second cellulose membrane ; fresh state, x 600. 



Figs. 4 and 5. — ^thalium septicum (Myxomycetes). 



Fig. 4. — Portion of a plasmodium in process of retraction ; fresh state 

 X 600. 



Fig. 5. — Portion of a plasmodium in process of retraction, x 200. 



