28 THOMPSON YATES LABORATORIES REPORT 
The absence of any definite fructification organ makes the differentiation of the two 
organisms almost impossible, but for my own part I believe them to be identical. This opinion 
is also held by Boer.* 
DESCRIPTION OF PLATE XII 
Fig. 3. — Agar growth. 
Fig. 4. — Tartaric acid potato. 
* ' Vrtljschr. f. Dermat.,' Wien., Bel. Ixxxvii, S. 429. 
