816 



EXPERIMENT STATION EECOED. 



0.76 lb. per acre of nitrogen as nitrates. Tlic drainaso during the same tiiiu 

 from bare drain gages was as follows: 



Tliv quaittity and coutiJOiiitioJi of diuiiiiii/c trutcr. 



During the period September 16, 190-1, to March 15, 1905. the total dewfall 

 on a surface of yJ^^ acre was 0.17 in., containing 1.85 parts per million or 

 0.08 lb. per acre of nitrogen as ammonia and 1.72 parts per million or 0.06 lb. 

 per acre of nitrogen as nitrates. The irrigation watei" used contained on the 

 average 0.21 part per million of nitrogen as ammoni;i and 0.13 part per million 

 of nitrogen as nitrates. 



Nitrogenous compounds and silica in sea water, W. E. Ringer (Clieiii. 

 WeehhL, 3 {IHIIH). i)i). 5S5-60S ; ahs. in Chem. Ceiithl, 1906, II, Xo. 18, p. lJ,.yj : 

 Jour. Chem. -S'oc. [London], 92 (1901), A'o. 5S1, II, p. 55). — It is recommended 

 that samples of sea water be examined without delay by Rabeu's process, as 

 follows : Distil 100 ce. of water with a few drops of acetic acid and examine the 

 distillate colorinietrically for nitrous acid by the pheuylenediamin test. Add 1 

 gm. of magnesium oxid* distil oft" free ammonia, and determine by the Nessler 

 test. Reduce nitrates in the residue with aluminum foil and sodium amalgam 

 and Nesslerize the ammonia formed. Determine silica by evaporating 3 liters 

 of the water with hydrochloric ;icid in a platinum dish and taking ui) the residue 

 with dilute acid. 



Samples of water ni.iy be preserved by adding 1 per cent of mercuric chlorid. 



The drinking waters of Vermont, G. H. Perkins (Rpt. State Geol. M., 

 1905-6. pp. 25-'i-3.'i2). — Analyses of a number of samples of water, including 

 some from Lake Champlain, are reported. The results show that Vermont is 

 well supplied with good waters largely derived from sprin|fs. 



Flowing wells and raunicipal water supplies of the Southern Peninsula 

 of Michigan, F. Lkverett et al. (U. »S'. GcoI. Hiirrei/. \Vatci--Siii)iiIi/ and Irrig. 

 Papers Xos. 182, pp. XI +292, pis. 5, figs. U: H^-l pp. XIV +393. pis. 5. figs. 

 69). — These bulletins record data obtained in examinations of several hundred 

 flowing well districts and municipal and institutional water supplies in the 

 State, and discuss the quality of the water supply of the Southern Peninsula of 

 Michigan and the means of improving it. 



The geology of Connecticut in relation to its water supply, H. E. Gregory 

 (.1///*. Rjit. Coitii. lid. Agr., 39 (1905), pp. 283-297). — The sources, amount, and 

 distribution of the river, lake, and ground waters of Connecticut are briefly 

 discussed. It is shown that while the State is in general well watered there 

 are few farms* in it which would not give greater yields of hay and grain crops 

 if the amount of available water were increased. It is predicted that in time 

 irrigation will be generally'practiced In Connecticut. "There is abundant water 

 in rivers and lakes for the purpose ; it needs only to be differently distributed." 



