626 EXPERIMENT STATIOIST RECORD. [Vol.41 



sensitive than oats or barley. Rye showed a considerable degree of resistance, 

 so much that it would be of little use as an indicator, but this fact establishes 

 Its value 'as a crop to be gi*own when arsenical soil poisoning is suspected. 

 Peas were much more sensitive than beans — in fact, peas would also serve as 

 a good indicator of arsenical soil-poisoning. Although the other crops 

 showed the effect of the poison, they were not specially sensitive, and were so 

 irregular that no close comparisons could be made. As the rains diminished 

 and the season advanced into spring and summer, all of the plants made more 

 rapid progi'ess. . . . 



" The plats were continued through 1916, 1917, and 1918, with the same 

 crops as indicators. The results are in the same order, but distinctly less marked 

 each succeeding season. During the present season (June, 1918) the etfect of 

 the arsenic in the stronger plats can still be traced in oats and barley, but it 

 is doubtful whether it will show to any extent as the crops approach maturity. 



" In the experimental plats, amounts of arsenic far in excess of any possible 

 bait accumulations in the manure did not have a noticeable effect on the crops 

 gi-own. It therefore seems justifiable ... to conclude that farmers have 

 nothing whatever to fear from the small amount of arsenite of soda in the form 

 of house-fly bait that may accumulate in stable manure." 



Liquid manure {Jour. Bd. Agr. [London^, 26 {1919), No. 4, pp. Jf2S-^31).— 

 Notes are given on the value and use of liquid manure, it being emphasized 

 that the more liquid manure is kept from the air the better will it retain its 

 fertilizing value, and that in storage of liquid manure no solid manure should 

 accompany the liquid into the tank, owing to the resulting fermentation and 

 loss of value. 



Tertilizers and their use in Canada, F. T. Shutt {Canad. Thresherman and 

 Farmer, 24 {1919), Nos. 8, pp. 28-31; 9, pp. 40-Ji2, figs. 2).— The author reviews 

 and summarizes the results of recent years' fertilizer experiments in Canada, 

 which indicate that in most cases excessively large dressings of fertilizer have 

 not given net profits per acre of the same magnitude as medium applications. 

 The larger profits came from using complete fertilizers. In general, it was 

 found that the exclusive use of fertilizers will neither maintain the fertility 

 of the soil nor yield profitable returns, and that it is on soils of medium quality 

 rather than on soils of poor quality that profitable returns can be expected. 

 Furthermore, the use of fertilizer on so-called " money " crops yielded the 

 greatest profit. 



Fertilizers and fertilizing, B. Heineich {Dunger und Dilngen. Berlin: 

 Paul Parey, 1918, pp. VI I +158). — This book is intended as a guide for the 

 practical use of stable and green manure and commercial fertilizers in 

 Germany. 



Home mixing of fertilizers, C. C. Fletcher {U. S. Dept. Agr. Yearbook 

 1918, pp. 185-190, fig. 1). — This is a brief popular description of the process of 

 mixing fertilizers at home. 



The effect of different amounts and different methods of applying commer- 

 cial fertilizer to the corn crop, M. F. Miller and F. L. Duley (Missouri Sta. 

 Bui. 16S {1919), p. 67). — As an average of two years' trials it was found that 

 when the weather is dry the addition of fertilizers in the row produced poorer 

 results than addition with the fertilizer drill in advance of the corn planter. 

 " The early effects of the row fertilization are more marked than the early 

 effects of the fertilizer applied over the whole surface, but corn so fertilized 

 does not seem to be able to stand the drought so well during July and August 

 because of the larger leaf development. Fertilizer applied as a side applica- 

 tion along the row at the second or third cultivation has brought fairly good 

 increases as an average of these two years." 



