22 Synopsis of the Bacteria and Yeast Fungi. 



On submerged parts of water-plants, on decaying pieces 

 of the same, and floating free in fresh water. 



The families contain at most 32 cells ; those consisting of 8 round 

 cells measure g'g ^ in length, 4-9 /t in breadth ; plates of 8 cells in 

 the act of separating are 6'6 /n long, 4'9 jn broad ; the same of 16 cells 

 have a length of i6'6 ju, and a breadth of 107 /i. 



Perhaps also Merismopedia violacea (Br^b.), Kutzing, belongs to the 

 Fungi. It agrees closely with S. Reitenbachii in size, but is distin- 

 guished by its colour, and especially by the fact that the cells are not 

 unfrequently united in one family to as many as 128. Very similar but 

 hitherto, I believe, only found in Sweden, is Merismopedium chon- 

 droideum, Wittrock. 



29. S. hyalina (Kiitzing). 



Merismopedia hyalina, Kiitzing. 



Cells round, almost colour- 

 less, 2 '5 /i in diameter ; families 

 usually composed of from 4 to 

 24 (seldom more) cells, reaching 

 15 /* in diameter. (Fig. 12.) 

 In marshes. 



Fig. i3.-J«mV^Aj,^^-««,X 4=0 (after ^y^^^^.^^ ^^^^^ Hepworth {Mi- 



croscopical Journal, v., 1857, p. i, pi. 

 i. fig. 2), is coloured a, lively green, and besides looks very little like a 

 Sarcina, and shall therefore only be mentioned. 



Besides the foregoing species of Sarcina, Fungi belonging to this 

 genus have been observed on various substratra — on cooked potatoes 

 (in little chrome-yellow heaps), on cooked white of egg (in clear yellow 

 spots), also in fluids, even in the blood of healthy and unhealthy 

 persons, and in the mouth. 



VI. BACTERIUM, Cohn ("Beitrage," i. p. 168). 



Cells shortly cylindrical, elongated-elliptical or fusiform, 

 increasing by transverse division, spontaneously motile. The 

 daughter-cells either separate from one another soon after 

 division, or remain united in a chain of two or more. The 

 formation of a zoogloea is also frequent. Sporeformation 

 like that of Bacillus. 



