New York Agricultural Experiment Station. 487 



slightly later on Soil 13a and the heads were slightly heavier than 

 they were on Soil 12a where no commercial fertilizers were used. 

 Further trials of the commercial fertilizers, both with and with- 

 out stable manure, were started in the fall of 189 Y. A medium 

 clay loam was taken as a basis for part of the soil mixtures and a 

 very light sandy loam was used for the rest. Samples of the 

 clay loam and the sandy loam taken before any fertilizers were 

 added to them were given to the chemist, for analysis. He re- 

 ports the following analyses of the air-dried samples, 7 determined 

 by official methods: 



Chemical Analyses of Clay Loam and Sandy Loam, 

 (crop of 1897-8.) 



., Moisture. Nitrogen. ^os. Potash. Lime. Organic 



SolL (H 2 0.) (NO (P2O5.) (K20) (Ca0) matter - 



Perct. Perct. Perct. Perct. Per ct Perct. 



Clay loam 



Clay loam, water-free. . 



Sandy loam 



Sandy loam, water-free. 



The following statement shows the percentage by weight of the 

 ingredients of the different soils: 



Table VIII. — Ingredients of Soils Used and Febtllizebs Applied in 



Lettuce Forcing. (Fall, 1897.) 



7 For mechanical analyses of these soils see page 479. 



