322 



ence to the amount of copper they coutained ; and experiments with 

 sorghum to test the possibility of developing a domestic sugar indus- 

 try. The part of the report which treats of sorghum was reprinted iu 

 Bulletin No, 8, pp. 3-11, of the station (See Experiment Station Eecord, 

 Vol. II, p. 46). 



Eeport of botanist, F. D. Chester, M. S. (pp. 37-100).— This 

 includes articles on the following subjects: (1) seed testing, (2) a 

 botanical description of the black rot of the grape, (3) the black rot 

 of the grape controlled by the Bordeaux mixture, (4) spraying with 

 sulphide of potassium for the scab of the pear, (5) peach yellows, cul- 

 ture tests, (6) diseases of alfalfa, (7) grass garden. 



Seed testing (pp. 37-68). — A reprint of an article in Bulletin No. 5, 

 pp. 5-32, of the station (See Experiment Station Record, Vol. I, p. 23). 



A botanical description of the hlacJc rot of the grape (pp. 69-78, illus- 

 trated). — A reprint of an article in Bulletin No. 6, pp. 18-28, of this 

 station (See Experiment Station Record, Vol. I, p. 196). 



The Mack rot of the grape controlled by the Bordeaux mixture (pp. 

 79_87). — A reprint of an article in Bulletin No. 6, pp. 7-17, of this 

 station (See Experiment Station Record, Vol. I, p. 196). 



Spraying with sulphide of potassiiim for the scab of the pear (pp. 

 88-91). — A reprint of an article in Bulletin No. 8, pp. 11-14, of this 

 station (See Experiment Station Record, Vol. II, p. 49). 



Peach yellows, culture tests (pp. 92-94). — Brief account of experiments 

 in which cultures of the diseased wood of i)each trees were made in 

 infusions of healthy peach wood and in nutrient gelatine. No signs of 

 becterial growth were discovered in these tests. 



Diseases of alfalfa (pp. 94-97). — Notes on observations of Phacidium 

 medicaginis, Larsch., and Cerospora helvola, Sacc, var. medicaginis, 

 which were found on alfalfa plants in Delaware in 1889. 



Grass garden (pp. 98-100). — A list of 45 species of grasses and forage 

 plants planted at the station in 1889, with especial mention of 14 varie- 

 ties which made good growth and promised well. 



Report of horticulturist and entomologist, M. H. Beck- 

 WITH, M. S. (pp. 101-136). — This includes articles under the following 

 titles: (1) plan of work, (2) small-fruit plats, (3) notes on black rot of 

 grapes, (4) insects injurious to crops in Delaware, (5) their identifica- 

 tion and extermination, (6) answers to inquiries, (7) experiments with 

 insecticides. 



Plan of work and small-fruit plats (pp. 101-105). — Brief preliminary 

 notes on tests of varieties of strawberries, currants, gooseberries, rasp- 

 berries, and blackberries in different parts of the State. 



iVo<es on the blade rot of grapes (pp. 106-109). — A reprint of an article 

 in Bulletin No. 6, pp. 28-32, of the station (See Experiment Station 

 Record, Vol. I, p. 196). 



Insects injurious to crops in Delaware (pp. 109-111). — A list of 40 

 species of insects reported to the station as injurious to crops in Dela- 

 ware in 1888. 



