436 BOTANICAL GAZETTE [JUNE 
these enzymes probably varies somewhat in different cases, and 
apparently more than one occurs which affects different forms of 
cellulose. The substance causing a marked swelling of the cell 
wall in the lily Botrytis, studied by Ward, and the turnip bac- 
terium by Potter, appears to be an enzyme not ordinarily pro- 
duced by Botrytis cinerea. 
In conclusion, it may be remarked that these results have a 
very suggestive bearing upon the parasitism of many other fungi 
which bring about a rapid destruction of the host tissue. 
MASSACHUSETTS AGRICULTURAL COLLEGE, 
Amherst, Mass. 
LITERATURE CITED. 
a oie Bary, A., Ueber einige Sclerotinien. Bot. Zeit. 44: 377- 1886. 
2. WarD, H. MARSHALL, A lily disease. Annals of Botany 2:319. 1888-89. 
3. KISSLING, E., Zur Biologie der Botrytis cinerea. Hedwigia 28 : 227. 1889. 
a WEHMER, Cc. Entstehung und physiologische Bedeutung der Oxalsaure, 
Pilze. Bot. Zeit. 51:54. 1893 - 
| Jeber Chem scliokeoeclarls der Pilze. Bot. Zeit. 52:1. 1894 | 
sugges von Membranen durch Pil 
, On a bacterial disease of the turnip. "Proc. Roy 
S, ‘The : soluble ferments and fer oT 
