2^0 BOARD OF AGKICULTUEE. 



proved that its general saline character had changed but 

 little as compared with that of the ocean ; whilst in some 

 instances, on account of a state of stagnation, the chlorides of 

 the water of the ocean had been increased by nearly one-third 

 in quantity. 



Besu'ts of Analyses n 1874. 



Water of the Atlantic Ocean contain 1.0407 percent, of chlorine. — Eerl. 



Subsoil w tei- from the central portion 

 of the marshes contained . . . 1.702 per cent, of chlorine. 



Stibsoil water from the lower marshes, 

 showing strong indications of local 

 stagnation and evaporation, con- 

 tained 2.3195 per cent, of chlorine. 



SesuUs of A alyses in 1S73. 

 Water from a large ditch, four feet 

 deep in the central part of the 

 marshes, contained .... 0.8282 per cent, of chlorine. 



0.1016 " of sulphuric acid. 

 Water from a ditch three feet deep, 

 and about one hundred rods distant 

 from the previously-mentioned local- 

 ity, contained ..... 0.1386 per cent, of chlorine. 



0.0934 " of sulphuric acid. 



The first-mentioned sample of water of 1875 — being col- 

 lected from a depth which corresponded with the temporary 

 level of the subsoil water — represents quite likely the general 

 deofree of alteration which the original soil water has sutFered 

 under favorable conditions, in consequence of the excess of 

 the fresh water from the creek, as far as that particular cen- 

 tral section of the marsh is concerned. The water consisted 

 of three-fifths of fresh water and two-fifths of genuine salt 

 water ; both the absolute and relative amount of chlorine 

 and sulphuric acid found, point in that direction. G. Forch- 

 hammer, who has made the composition of the water of 

 the Atlantic Ocean a special subject of investigation, con- 

 siders 100 parts of chlorine to 11.89 parts of sulphuric 

 acid the mean relative proportion of these substances in that 

 liquid. 



The second sample of water tested, 1875, which was taken 

 from a level one foot higher than the first one, represents 

 evidently a kind of soil water which will quite frequently 



