FIELD CROPS. 549 



from those plats is also less than it is in the ash of tobacco from plats which were 

 dressed with the same, or even half the same quantity of fertilizer-potash in form of 

 carbonate. 



"(b) The tobacco dressed with high-grade sulphate of potash and the ash of which 

 contained a smaller percentage of potash than any other lot contains, on the other 

 hand, the highest percentage of lime, and the tobacco dressed with the double sul- 

 phate of potash and magnesia also contains a relatively high percentage of lime. 



"(c) In general the tobaccos which have most lime have least magnesia, and rice 

 versa. Comparatively large percentages of magnesia are found in the lots of tobacco 

 which were raised on plats dressed with fertilizers containing much magnesia. In 

 the short wrappers of a siugle plat, P, the percentage of magnesia was larger than 

 that of lime. 



"The quality of the leaf has not been damaged in previous years by these large 

 quantities of magnesia. Lots P, Y, F, and 1), which have large percentage amounts 

 of magnesia, have heretofore been- among the best tobaccos as regards quality of leaf. 



"(d) The percentage of sulphuric acid in the leaf is very much larger when sul- 

 phates are used in the fertilizer. 



"It is believed that these large amounts of sulphuric acid impair the burning- 

 quality of the leaf, and in this experiment the -burn' of tobacco from the plat 

 which was dressed with high-grade sulphate has been very unsatisfactory. 



"(e) The ash of tobacco from the plat dressed with stable manure contains 5 times 

 as much chlorin as the ash from any other lot in the series." 



Experiments in growing tobacco with different fertilizers : 

 Final report on the fermented crops of 1895, E. II. Jenkins 

 (Connecticut State Sta. Bpt. 1806, pp. 285-301). — This is a final report 

 on the experiments reported in the Annual Iieport of tbe station for 

 1895 (E. S. K., 8, p. 395). Tbe separate crops are described in detail 

 and tbe comparative, fire-holding capacity of tbe various lots is tabu- 

 lated, tbe report being based on tbe examination of tbe samples which 

 were cased down for fermentation. Tbe shrinkage during fermentation 

 amounted to 10.7 per cent. The author states that the nature of the 

 chauge during tbe fermentation, and not the shrinkage, determines the 

 effect on the quality of the leaf. Experiments were begun in 1892 and 

 a full discussion of the work is postponed until 5 successive crops 

 shall have been grown and fermented. 



Experiments in growing tobacco with different fertilizers in 

 1896, E. H. Jenkins (Connecticut State Sta. Bpt. 1896, pp. 302-310).— 

 These experiments are a continuation of the work reported by the 

 station in 1895 (E. S. R., 8, p. 395). This report gives a description of 

 the crop grown in 189C. Tables give tbe amount and kinds of fertili- 

 zers applied, the percentage of long and short wrappers, top leaves, 

 and seconds obtained, and the comparative fire-holding capacity of the 

 various crops. The methods of growing and harvesting tbe crop are 

 described. This crop is the last in a series of experiments begun in 

 1892. Samples of this crop are now in process of fermentation and will 

 be graded by an expert in the fall of 1897. "A complete review of the 

 whole 5 years' work can then be given." 



The author reports some of tbe results obtained during the 5 years, 

 and the results of chemical analyses of wrapper leaf tobacco of tbe 

 different lots are given in a table. 



