66 



HATCH EXPERIMENT STATION. 



[Jan. 



taken from inland localities which were not manured gave an 

 average of about 6 per cent., or about three times as much 

 as that shown by the coast soils. This is not true, however, 

 of the coast soils such as are used for general truck farming, — 

 as in the case of Arlington, for example, — in which instance 

 we would find the percentage of organic matter quite large. 

 The amount of water in the soils differs also, which is caused 

 by the analyses of some of the samples being taken at difi'er- 

 ent times, and from not being subject to the same air-drying 

 conditions. It will also be noticed that the Attleborough 

 soil contains an unusually large amount of silt, — a feature 

 which seems to be peculiar to that soil alone. As a rule, the 

 inland soils contain a very large amount of very fine sand, 

 and this appears to be especially characteristic of the Con- 

 necticut valley soils. Some analyses which we have made 

 show that this soil sometimes possesses as much as 75 per 

 cent, of this constituent. It is the excessive amounts of this 

 constituent of the soil which renders the Amherst soil com- 

 pact, and which gives to it an increased water-retaining 

 capacity. The clay, however, shows a gradual increase as 

 we pass inward, and in a less uniform manner is this exhibited 

 by the silt, which can be seen by examining Table HI. 



Table III. — Showing the Percentage of Gravel-Sand, Silt and 

 Clay in the Soils shown in Table I. 



SAMPLE. 



Gravel-Sand. 



Silt. 



Clay. 



Orleans, 



Bridgewater, 



Eastbam, 



Concord, 



Attleborougb, 



Worcester, . 



Spencer, 



Montague, . 



Amherst, 



Pittsfleld. . 



90.22 

 90.52 

 92.51 

 89.35 

 69.39 

 71.60 

 66.60 

 94.15 

 77.39 

 66.49 



4.23 

 4.16 

 2.17 

 3.57 

 13.46 

 7.45 

 9.10 

 2.99 

 8.20 

 7.32 



1.37 

 1.13 

 1.43 

 1.08 

 1.42 

 2.75 

 3.25 

 .27 

 4.13 

 6.40 



There are inland soils which contain considerable amounts 

 of sand, such as the Connecticut valley soils, for example, 



