150 



ELEVENTH ANNUAL REPORT 



Pliosplioric acid, total 

 Potash^ total . 

 Potash, soluble in water 



Since the publication of Bulletin No. 53, "The Farm Water 

 Supply/^ some noteworthy results have been obtained from 

 several unpolluted springs in different sections of the state, 

 still further showing that our natural ground-waters are ex- 

 ceptionally pure and soft, and that water containing much 

 chlorine and soluble salts must be regarded with suspicion and 

 used with care. 



The water from Whitefield yielded a spectroscopic test for 

 lithia in the solid residue; but it was not present in larger 

 quantity than a distinct trace. 



Wood Ashes 



Three years ago Bulletin No. 43, "Some Inferior Wood 

 Ashes,'' called attention to the fact that partially leached ashes 

 were being sold in the state. Since that time we have received 

 twenty-nine samples of ashes, of which nine were sent to the 

 station in 1897, eleven in 1898, and nine this year. 



Of these samples, but two showed evidences of having been 

 leached. One of these was received last year and yielded only 

 2.38 per cent water-soluble potash and 3.82 per cent total- 

 potash. The other was received this fall and contained 1.67 

 per cent water-soluble potash and 1.94 per cent total potash. 



The results obtained on all the samples are summarized as 

 follows: 



