COMPAKATIVl. ( II.ITKAI. DATA. 



81 



I I 111 I: A I. DATA. 



Color gray-green, with scattered while to pink Bclerotia; reverse, sulphur-yellowish 

 to pronounced salmon; color in media reddish or yellowish in special cases, others 

 none. < >dor, none. 



Fifteen per cent gelatin in water, typical; liquefaction, none in 15 days, later very 

 slow liquefaction; litmus reaction neutral, leaves both acid and alkaline media 

 purple-blue. Potato agar and bean agar, typical, Blightly thinner than gelatin cul- 

 tures, gray-green without sugar, clear green with cane sugar. Potato plugs, typical, 

 transpires yellow drops which become very dark yellow (balsam). Ranlin's fluid, 

 good colonies becoming rosy below. Cohn's solution, small colonies, fluid slightly 

 yellow. 



Synthetic fluid (Dox's), carbon supplied as: Cane sugar, grew in solutions up to 30 

 percent with acid reaction. Lactose 3 percent, very slow growth of small character- 

 istic colonies. Lactic acid oil per cent, good growth, light green. Levulose 3 per 



Fig. 30.— rcnicillium No. 32: a, b, (/.branching of conidial fructifications (a X 1,400, 6 and d,X 900); 

 c, a single secondary verticil (xl,400); g, h, j, k, sketches of fructifications of various ages 

 (X 140); m, n, o, germination of conidia (X 900). 



cent, very alow-growing but heavy colonies. Galactoses percent, typical. Glycerin, 

 very small colonic-. Lutterfat, typical colonies. 



Milk, curdling (0.25 per cenl calcium chlorid added) very slow; digestion, very 

 slow; color in milk, none. 



At 37° I ., grew more rapidly than check at 20° C. 



COMPARATIVE CULTURAL DATA. 



A summary <>!' accessory cultural data has already bees given for 

 each species in connection with the descriptions. Many scries of 

 culture- have been made with numerous media to obtain data as to 

 the ability of the species studied to grow upon particular media or 

 under particular conditions. It has been possible thus to determine 

 the relative activity of single species and groups of species. 

 Although particular species in these cultures have shown unique 

 differences which assist in their differentiation, the most valuable 



8108— Bull. 118—10 6 



