New YorK AGRICULTURAL EXPERIMENT STATION. 61 
RESULTS OF THE TESTS. 
_ Alfalfa.—Packages Nos. 2, 3, 4, 5. The results of nineteen 
examinations of the packages may be summarized as follows: 
In no case was there more than an occasional colony which 
resembled Ps. radicicola. A large number of these suspicious 
colonies as well as examples of the various types of colonies which 
appeared were examined microscopically by staining and hang- 
ing drop, and in doubtful cases by sub-culture. In no case did 
we recover cultures which appeared to be Ps. radicicola. A few 
colonies of this germ may have been present and _ been 
overlooked. 
Soy bean.—Packages Nos. 9, 10, 18, 14. The results of twelve 
examinations were practically identical. The packages of cotton 
each produced an abundant growth of pink yeast and very little 
else. Three colonies obtained May 10 from package No. 10 were 
thought to be Ps. redicicola. This was the first examination and 
unfortunately this point was not fully determined. ' 
Cowpea.—Packages Nos. 16, 17, 18, 19. The results of the 
twelve examinations differ from those of the other packages in 
some respects. It will be observed that the packages bear differ- 
ent dates. No. 18 was about four months old at the time of its 
first examination and four examinations failed to show a single 
colony which resembled Ps. radicicola, No. 17 was dated a month 
later, but the results of the examinations were simliar to those of 
No. 18. Nos. 16 and 19 were dated but a month before the first 
examination. In all three tests of each package there developed 
a considerable number of colonies resembling Ps. radicicola 
except that they had a greenish-yellow tinge, especially at the 
nucleus of the colony. 
As a tendency to the production of a yellow pigment is noted 
by Sprague® in the case of Ps. radicicola from cow pea these 
colonies are temporarily classed as Ps. radicicola. 
CONTROL FLASKS, 
At the second examination of the cotton for alfalfa on June 5, 
two flasks were inoculated with stock cultures of Ps. radicicola, 
These flasks contained a portion of the same medium used in the 
®Sprague, L. P. The Fixation of Nitrogen by Leguminous Plants, Thesis, - 
University of Vermont, May 1, 1905. 
