570 EXPERIMENT STATION RECORD. 



than fungicides, should be tested. Experiments are planned by which 

 the author hopes to demonstrate the agency of thrips in distributing 

 the bacilli and in inducing the disease. 



Experiments on the control of the bacterial wilt and the sclerotmm 

 wilt by means of culture and the use of fertilizers are reported else- 

 where (p. 552). 



Observations on tomato blight, C. E. Mead {Nenjo Mexico Sta. 

 Bid. 3S^ pp. Ii.It,., I/j). — Fourteen varieties of tomatoes were grown 

 under the supervision of the author to ascertain the variet}"^ best 

 adapted to the climate, both for its jdeld and blight resistance. In 

 conseiiuence no spraying was done. Diseased plants began to appear 

 early in June, and it seemed evident that there was considerable ditier- 

 ence in the susceptibility to blight. The varieties Stone and Dwarf 

 Aristocrat seemed to be most resistant, while Mayflower was very 

 badly attacked. The previous recommendation that tomatoes be grown 

 in the shade during the hot weather to check the attacks of blight was 

 investigated by growing tomatoes alternating with rows of corn, but 

 there was no appreciable difl'erence between the number of blighted 

 plants in the shade and open ground. As mechanical recommenda- 

 tions the author suggests the early removal of all diseased vines from 

 the field, thorough ridding of plants of insect pests, and the mainte- 

 nance of a thorough state of cultivation of the soil. 



Dry rot, brov^n spot, or Bald-win spot of apples, W. T. Macoun 

 {Canada E.qA. Fanm RpU. 1899. pp. 96-99).— A report on this dis- 

 ease was made in 1896 (E. S. R., 9, p. 850) in which it was described at 

 considerable length. During subsequent years it has been under 

 investigation, and in 1897 and 1898 19 varieties of apples at the Experi- 

 mental Farm were affected, some crops having been so badly injured 

 that the fruit was almost worthless. Although the trees had been 

 thoroughly sprayed the fungicides appeared to have been without effect 

 in reducing the disease. 



From replies to circulars sent out 1)}' the author to the different fruit 

 regions of Canada and the United States, it appears that at least 60 

 varieties are affected, the Baldwin seeming to ])e attacked the most. 

 It is thought possibly this may be due to the fact that this apple is 

 more extensively grown than any other variety in those regions where 

 the spot is most prevalent. In range it extends from the Atlantic to 

 the Pacific, being most prevalent in eastern Ontario, Quebec, British 

 Columbia, and the eastern United States. Opinions of growers differ 

 as to the cause, and the author quotes extensively from the Vermont 

 Station Report for 1899 (E. S. R.. 12, p. 258). As yet no remedy is 

 known. 



On the prevention of raspberry anthracnose by cultural 

 methods, \V. C. '^TX^iiGi'siCoiDiectlcut State /Sta. Rpt. 1S99., pt. 3, 

 pp. 7Jr-'ii76). — The raspberry anthracnose is briefly described and the 

 investigations of Thaxter (E. S. R. , 2, p. 482), and the experiments 



