JOURNAL OF MICROSCOPICAL SCIENCE. 



DESCRIPTION OF PLATE VIII, 



Illustrating Mr, Currey's paper on some points in the 

 Structure and Physiology of certain Fungi."^ 



Fig. 

 1. — A spore of Helminthosporium SmitJdi. 

 2. — A spore of the same plant germinating. 

 3, 4. — Fragments of similar spores germinating. 



5. — Fragments of two of the vegetative threads of the same plant pro- 

 truding filaments similar to germ filaments. The filaments from 

 the two upper ends have become united in growth. 

 6. — Spores of Helminthosporium fumosum. 



7 to 11. — Various states of the cells constituting the so-called joints of 

 the fruit Phragmidium bulbosum after their escape from the enveloping 

 membrane under the action of heated nitric acid. 

 12. — The bottom internal cell and the internal stem-cell of a fruit of 



Phragmidium bulbosum. 

 13. — A fruit of Phragmidium btilbostim which has been subjected to hydro- 

 chloric acid and then ruptured by pressure, showing the escape of 

 one of the inner cells. 

 14. — A similar fruit, under the action of hydrochloric acid, showing the 



spontaneous protrusion of two of the inner cells. 

 15. — A similar fruit in which the outer membrane or ascus has become 

 swollen and separated from its contents by the action of heated 

 nitric acid. 

 16. — A similar fruit, after having been soaked in water for some hours, 



exhibiting the internal stem-cell. 

 17. — A fruit of Phragmidium mucronatum under the same circumstances. 

 18, 19. — Fruits of Phragmidium bulbosum in germination. 

 20. — One of the so-called "sporidia" produced by a germinating filament 

 of Phragmidium bulbosum which has become detached and commenced 

 germination on its own account (magnified 420 diameters). 



* Except where it is otherwise mentioned, all the figures are magnified 

 220 diameters. 



