191 
240. Weed, 0. M. The scab of wheat heads. Proc. lltli Ann. Meeting, Society for the 
Promotion of Agricultural Science, Indianapolis, Indiana, August 18, 19, 
1890,pp. 47-48 (issued December, 1890, with figs.). Notes Fusisporium cul- 
morum, W. G. Smith, as causing serious damage to the heads of wheat in 
Ohio. 
241. -. A second experiment in preventing the injuries of potato blight. Bull. Ohio 
Ag. Ex. Sta., second series, Vol. in. No. 8, September, 1890. Gives report 
of somewhat unsatisfactory experiments against potato blight with use of 
Bordeaux and ammoniacal copper carbonate solutions. Notes bacterial 
disease as found by Burrill in Illinois. 
242. Wingate, Harold. Orcadella operculata, Wing. Nouveau Myxomycete. Revue 
Mycologique, Toulouse, April, 1890. (November, 1889), No. 46, p. 74. 
Describes a new family of Myxomycetes (Orcadellacece) consisting of the single 
species Orcadella operculata , found in Fairmount Park, Philadelphia, and 
also in Maine (Harvey), growing on living trunks of Quercus rubra. Con<- 
siders it to stand in order 4 of Rostafinski after family 13 ( Clathropiychiacece ) 
and unites in a measure the orders Anemece and Heterodermiew. 
