1C)() EXPERIMENT STATION RECORD. 



carhoiiati', .') llis. ; iiolaysiuin iicniiaiigaiiaU', o oz. ; t<ol"t yuap, b uz., and rain wator, 18 

 gals. All ilisi'a>c<l ^-(■t■(Ilins,'^■ shuuld Ix' collected and burned. 



A new Bordeaux po'wder, R. N. Bikd {Misaunri Sla. Bui. 00, pp. U.J-10.!, figs. 5). — 

 At the request of the department of liorticulture the author has made an investiga- 

 tion of a dry form of liordeaux mixture wliich could he suljstituted for the usual 

 fornuila. The powder devised is comj)osed of 4 lbs. of copper sulphate and 4 lbs. of 

 lime, the lime and cojjper sulphate each being dissolved or slaked in 2\ gals, of water. 

 Sixty pounds of air-slaked lime is sifted through a fine sieve. The milk of lime and 

 copper sulphate solution are mixed and filtered so that most of the water is removed. 

 The remaining wet material is thoroughly mixed with the 60 lbs. of air-slaked lime, 

 after which the mixture is rubbed through a coarse sieve while still somewhat damp. 

 AVheu perfectly dry it is put througli a fine-meshed sieve, and can be applied with 

 any of the usual means for applying powders to plants. This powder contains abtnit 

 3J times as nuich copper per gallon as liquid Bordeaux mixture. In order to reduce 

 it to the usual proportion it should be diluted with about three or four times its bulk 

 of powdered lime or with flour. The results of experiments in which practical tests 

 were made of this powder are to be given in a forthcoming bulletin of the horticul- 

 tural department of the station. 



ENTOMOLOGY. 



Report of the entomologist and botanist, J. Fletcher {Canada Expt. Farms 

 Epts. 1902, pp. 169-195, figs. o). — The chief enemies of cereal crops during the year 

 were Hessian fly and locusts. The Hessian fly was excessively injurious in 1901, but 

 disappeared almost entirely during the season of 1902. Notes are given on the con- 

 ditions under which the insect was found during the season, but the cause of the 

 disappearance is not well understood. 



Locusts were present in large num])ers and did considerable damage in ^laiiitoba. 

 Several remedies were tried, but the best success was had by the use of Criddle 

 mixture, which, as recently modified, consists of 1 part Paris green thoroughly mixed 

 in 60 parts of fresh horse manure, to which 2 lbs. salt is added to a half barrel of the 

 mixture. The mixture is then scattered along the edge of the infested fiehl and 

 serves as a poison bait. 



Notes are given on the habits, life liistory, and injuries of the pea weevil, pea moth, 

 and destructive pea aphis. The remedies suggested against the pea weevil are 

 fumigation, holding over the seed, treating with kerosene, and scalding the seed. 



San Jose scale has been found to be difficult to control, but in the experience of the 

 author trees may be kept in a bearing condition by the use of kerosene emulsion 

 applied twice during the summer, whale-oil soap at the rate of 2| lbs. to the imperial 

 gallon of water, or by fumigation with hydrocyanic-acid gas. Two new strawberry 

 pests were observed, but no great damage was done by them. These insects are 

 Mesoleuca truncata and .Srupelmoma tristigniata. 



A report on the apiary is given by J. Fixter. A test was made of the comparative 

 value of Lang.stroth, Hedden, and 2 other kinds of hives. The best results were 

 obtained from the Langstroth hive. Experiments in feeding sugar sirup for winter 

 stores showed that bees thus treated jjassed through the winter in good condition, 

 without the development of dysentery or other diseases. Experiments with brood 

 foundation of different sizes indicated that the best returns were to be had through 

 the use of strips of foundation about 1 in. wide. The question of injury to fruit 

 by bees w"as tested by means of a number of experiments with peaches, pears, i)lums, 

 grapes, strawberries, and raspberries. The results obtained confirm those of previ- 

 ous experiments and indicate that bees do not, under ordinary conditions, attack 

 whole fruit ot any kind. They do, however, suck the juice from fruit of which the 

 skin has been punctured. 



