34 



yielded 20 cwt., the second plot 29 cwt., .and the third 36 cwt. y 

 with corresponding increase in straw. 



Barley, if rich in nitrogen, is not so good for the brewer, although 

 you cannot expect any fair crop without a nitrogenous manure. If too 

 rich it is suitable only for feeding. For brewing it should be evenly 

 light yellow, thin-skinned, and easily germinating, and rich iik 

 starch. The climate near the> sea is favorable. A cool temperature,, 

 with many showers, farther inland also. A deep, humose loam,, 

 which contains lime, is somewhat loosei, and not too wet or cold, is 

 the best soil, which must be free from weeds, and not manured with, 

 fresli dung. Dr. Aitken reports that the weight and the quantity 

 cf the grain was much improved by potash. While from a plot 

 manured with nitrate of soda and superphosphate 16 per cent, was 

 classed as light grain out of a total yield of 1,706 lb., the remaining 

 1,510 lb. (28J bushels) weighed only 50 lb. per bushel. When sul- 

 phate of potash was added to the above manures the crop yielded 

 2,761 lb., of which 3J per cent, was light grain, while the remaining 

 48.9 bushels consisted of grain weighing 54J lb. per bushel. It is- 

 interesting that Dr. Aitken made four years earlier experiments, 

 apparently on the same ground, which was a clay soil, and it con- 

 tained at that time as much potash as the crop of barley required. 

 Even a somewhat larger crop could then be grown with nitrate of 

 soda and phosphoric acid alone. Four years later the two plots, 

 receiving only potash yielded 50 per cent, more grain. 



M. Monestier, of Montbrun, received, without manure, 1,360 

 Ibs. of barley per acre ; with 480 Ibs. of Thomas phosphate, 1,920 

 Ibs. ; with 480 Ibs. of Thomas phosphate and 80 Ibs. of nitrate of 

 soda, 2,240 Ibs.; with 480 Ibs. of Thomas phosphate, 80 Ibs. of 

 nitrate of soda, and 160 Ibs. of muriate of potash, 2,640 Ibs. 



In his average of nineteen experiments Professor Emmerling, 

 of Kiel, did not mention the quantities of manures used ; but made 

 some remarks. The steamed bonemeal gives up in the first year 

 generally but little of its phosphoric acid, but more of its nitrogen. 

 Kainit with superphosphate or Thomas phosphate gave favorable 

 results on sandy or moor land, not in some of the good loam of 

 Eastern Holstein, where the soil contains sufficient potash. Paul 

 Heddaeus, of Wolfskehlen, experimented with manures for barley 

 on a loamy soil. As complete manure he used 4 cwt. 80 lb. of 

 kainit, and also of Thomas phosphate, with 160 lb. of nitrate of 

 soda per acre ; but he had also three plots with only 80 lb. of nitrate 

 of soda. Kainit and phosphate were given on the 5th of March ; 

 the nitrate, one-half, on the 9th of April ; the other half on the- 

 4th day of May. The average of each three plots was as follows,, 

 viz.: 1, without manure, 15 cwt. 28 lb. of barley; 2, with full r 

 complete manure, 22 cwt. 40 lb. ; 3, with only 80 lb. nitrate of soda, 

 18 cwt. 32 lb. ; 4, without potash, 18 cwt. 50 lb. ; 5, without phos- 

 phoric acid, 18 cwt. 50 lb. ; 6, without nitrogen, 15 cwt. 60 lb. The 

 cost of the manure for 2 was 1/15/, against a gain of 3/12/ per 

 acre ; for 3, 1/7 f, against 1/18/4; for 4, 1/6/9, against 1/19/9;. 



