1893.1 Biology of the Uredinee. 447 
range. Not only is their geographical distribution often ex- 
tensive but the vertical range of the various forms exceeds 
_ that of the majority of the higher forms of life. 
4. While no pathogenic property was noted in any of the 
forms isolated, other physiological characters, as the forma- 
_ tion of soluble enzymes and the ability to reduce nitrate salts, 
were conspicuous characteristics of the more prevalent forms. 
University of Wisconsin. 
EXPLANATION or Pirate XXXVI.—Figures of bacteria in cultures drawn with 
a Zeiss microscope, tube length 160™™, no. 6 compensating ocular and ;'; hom- 
ogeneous oil immersion. 
Fig.t. A. Bacillus limicola, gelatin culture 5 days old. 
1. Bia, rt type of cells from agar culture; 4, lanceolate type from 
old agar culture; c, normal bacillus type from agar culture, 3 days old. 
Fig. 2, A. Bacillus pelagicus, culture in in, 
Spore bearing bacilli from gelatin culture, two weeks old. 
Bacillus maritimus, gelatin culture, 2 days 0 
. Single cells from potato culture, 2 days old. 
Bacillus litorosus, 3 days growth in gelatin. 
Cells from young gelatin culture. 
ia 
a 
by ty by 
Studies in the biology of the Uredinew. 1. 
Notes on germination. 
M. A. CARLETON. 
WITH PLATES XXXVII-XXXIX, 
Within the last eighteen months I have made about four hun- 
dre media, at various 
'T germination, (2) to obtain a working b 
Paration of fungicides for the prevention of 
“i economic species. A great part of the work, partic- 
Warly that of most economic importance, has already been re~ 
e results and sug- 
Nearly all the cultures made were of the signs pele Se 
in which the spores were immersed, 
Su ; Pp . 
— ° a cover-glass placed over an ordinary glass ce 
"Kan — : i 
Agric. Exp. Sta. Bull. 78. Mar. 1893. 
