240 EXPERIMENT STATION RECORD. [Vol.36 



the average of the younger spurs. Among spurs of uniform age, there was a 

 marked degree of correlation between their length and production. This cor- 

 relation was more pronounced as the spurs became older. 



" There was considerable correlation between the amount of growth that 

 a spur made one year and its production the following year. The average 

 Grimes spur grew more during the year that it produced fruit, than the year 

 it was not fruiting. Spurs bearing two years in succession averaged somewhat 

 less to each spur the second season than other spurs that bore no crop the first 

 season. 



" There was a high degree of correlation between the diameter of spurs and 

 their production. This was practically the same for old spurs as for young. 

 Spurs of the same age borne on branches of large diameter bore a larger amount 

 of fruit than those on smaller branches. 



" In the Grimes tree studied the largest average production for each spur 

 was found in the south quarter. The upper part of the tree produced more to 

 each spur than the lower, and there was a slightly greater production for each 

 spur on the outside of the tree than on the inside. Wherever the average pro- 

 duction for each spur was less than the mean, the average age was more." 



Factors which influence regular bearing in an apple orchard, J. H. Goubley 

 (Ohio State Hort. Soc. Ann. Rpt., 49 {1916), pp. 67-73).— The substance of this 

 paper, which is based on the results of experiments at the New Hampshire Ex- 

 periment Station, has been noted from another source (E. S. R., 34, p. 833). 



Arsenate of lime in combination with soluble sulphur as a spray material 

 for the apple, G. E. Sanders {Agr. Gaz. Canada, 3 (1916), No. 4, pp. 305-307).— 

 In view of the severe burning of apple leaves caused by soluble sulphur in 

 combination with lead arsenate when used as a summer spray, tests were 

 made of a mixture of arsenate of lime and soluble sulphur with special refer- 

 ence to its burning effect. Data are given showing the results of these tests, 

 together with comparative tests of other combinations of soluble sulphur, Bor- 

 deaux, and lime-sulphur. 



Briefly stated, the exiDeriments show that a mixture of arsenate of lime, 

 0.75 lb. to 40 gal., and soluble sulphur, 1 lb. to 40 gal., caused practically no 

 burning on apple foliage. It is pointed out that soluble sulphur should not be 

 exposed to the air for any length of time, since the sodium sulphid crystals 

 change to sodium thiosulphate or photographers' " hypo " which, even though 

 it is more or less readily soluble in water, is incapable of any further change 

 and therefore of no value as an insecticide or a fungicide. 



Apple storage problems, L. Greene (Trans. Ind. Hort. Soc. 1915, pp. 72-96, 

 figs. 6). — This paper comprises a popular summary of the author's storage in- 

 vestigations previously noted (E. S. R., 30, p. 41). 



False blossom of the cultivated cranberry, C. L. Shear ( U. S. Dept. Agr. Bui. 

 444 (1916), pp. 7, pis. 4, figs- 2). — A popular descriptive account, with illustra- 

 tions, of the false blossom of cranberries which the author in his investiga- 

 tions of cranberries in cooperation with L. R. Jones found to be a physiological 

 trouble due to unfavorable cultural conditions (E. S. R., 31, p. 841). To 

 overcome the disease it is recommended that optimum conditions for growth 

 should be provided, including good drainage, clean culture, and pruning. 

 Where diseased vines are numerous the bog should be scalped and replanted 

 with healthy vines. To prevent the further spread of the disease only vines 

 known to be absolutely free from it should be planted. 



The cranberry industry and its possibilities in Canada, M. B. Davis (Can- 

 ada Expt. Farms Bui. 29, 2. ser. (1916), pp. 30, figs. 20).— This bulletin con- 

 tains practical directions for cranberry culture, the subject matter being based 



