MICROSPHAERA 157 



either in the form of flowers-of-sulphur, or solutions of the 

 sulphide. In applying the sulphur, bellows should be used, 

 and the applications should be made ten or twelve days 

 before the flowers open, the second when in full bloom, 

 and a third three weeks or a month later, if the disease 

 seems to be on the increase. The best results are obtained 

 when the thermometer is ranging between 8o to ioo F. 

 In this temperature fumes are given off which quickly destroy 

 the fungus. We have obtained excellent results in treating 

 this disease with a solution made by dissolving half an 

 ounce of potassium sulphide to the gallon of water. The 

 preparation is cheap, and can be quickly and effectively 

 applied with any of the well-known spraying pumps. The 

 greatest care should be exercised in making the second 

 spraying, which, by the way, should be at the same time 

 as that mentioned for the flowers-of-sulphur, in order to 

 protect the blossoms from the fungus.' 



The common practice of placing sulphur on hot pipes is 

 a very risky one and should not be followed. 



Berkeley, Gard. Chron., Nov. 27 (1847). 

 Prillieux, Malad. des PL Agric, 1, p. 17 (1897). 

 Scribner, U.S. Dept. Agric, Bull. No. n. 

 Viala, Les Malad. de la Vigne, p. 32. 



Uncinula mori (Miyake) is described as a pest attacking 

 mulberry leaves in Japan, where it is known as ' Omoteshir- 

 shibubyo,' or upper-side mildew, as it occurs mostly on 

 the upper side of the leaves. Perithecia, small, black, 92- 

 130 \i diam., appendages 12-26 in number, usually 15-17, 

 130-216 jj. long, basal portion thick-walled, above thinner, 

 and the outline nodulose or slightly crumpled, with a small 

 close half-turn at the tip. Asci 4, rarely 6, 50-60X40- 

 50 ji. Spores 4-5 in an ascus, elliptical, 27-35x14- 

 1 9 fi. 



Miyake, I., Bot. Mag. (Japan), 21, p. 1 (1907). 



MICROSPHAERA (Lev.) 



Perithecia containing several 4-8-spored asci ; appendages 

 repeatedly forked at the tip. 



Gooseberry-leaf mildew (Microsphaera grossulariae, Lev.) 



