70 OASPER 0. MILLER. 



39. VON Rosen, F. — " Studien iiber die Kerne und die Membranbildiing bei 



Myxomyceteu und Pilzen," ' Beitrage zur Biologic der Pflanzen/ 

 Bd. vi, Heft 2, 1892. 



40. Heetwig, R. — 'Lehrbuch der Zoologie,' Jeue, 1892. 



41. Masse, G. — ' A Monograpli of the Myxogastres,' London, 1892. 



42. McBuide, T. H.— "Tlie Myxomycetes of Eastern Iowa," 'Bulletin 



from the Laboratory of Nat. Hist. State Univ. of Iowa,' vol. ii, 1892. 



43. Celakovski, L., jun. — ' Die Myxomyceten Bohmen's,' Prag, 1893. 



44. Lister, A. — ' A Monograph of the Mycetozoa,' London, 1894. 



45. Miller, C. 0. — " Ueber aseptische Protozoenkulturen und die dazu 



verwendeten Methoden," ' Centralb. f. Bale. u. Parasitenk.,' Bd. xvi, 

 1894, No. 7. 



EXPLANATION OF PLATES 6 and 7, 



Illustrating Mr. Casper O. Miller's paper on '' The Aseptic 

 Cultivation of Mycetozoa." 



Fig. 1. — Sporangia of Chondrioderma diff. on the glass above the 

 fluid, from a culture made with unsterilised hay. 



Fig. 2. — Physarum cinereum, showing sporangia at the periphery of 

 the plasmodial network which radiated from the end of a stalk of hay leaning 

 against the glass. 



Fig. 3. — Stemonitis A, with the sporangia in process of formation on 

 the side of the flask at a point where a stalk of hay touched the glass. The 

 colour iiad not fully developed. The course which the plasmodium took is 

 shown by the thread which descends obliquely to the water. 



Fig. 4. — Sporangia of Stemonitis B, fully developed on stalks of hay. 



Fig. 5. — A plasmodium of Stemonitis lying on the hay at the surface 

 of the water before it ascends to form sporangia. 



Fig. 6. — A portion of plasmodium of Stemonitis A., which had spread 

 out under a cover-glass. The trunks radiate from a clump of encysted zoo- 

 spores, some of which were enclosed in the protoplasm. Drawn with a 

 camera lucida. X 130. 



Fig. 7. — A portion of a plasmodium of Physarum cinereum spread out 

 under a cover-glass, x 130. 



Fig. 8. — A portion of a plasmodium gotten from hay. x 130. 



