197 



He thought the method proposed for determining the acidity of milk 

 was the most simple, haudy, and reliable that could be placed in the 

 hands of the practical cheesemaker. 



The occurrence of common salt at different altitudes, A. 

 Miintz {Compt. rencl, 112 {1891), pp. 447-449).— R-din water collected at 

 liigh altitudes was found to be very i)oor in sodium chloride, as is 

 indicated by the following figures : 



Rain in liigh mountains (8,650 feet) 0. 34 mg. of salt per liter. 



Rain in low land : 



Bergerac 2.50 Do. 



JoinviUe-le-Pont 7.60 Do. 



Water from streams in the Pyrenees contained on an average 0.9 

 mg. of salt per liter. The author gives the following figures as indicating 

 that plants growing at a high altitude contain much less chlorine than 

 those growing on the plains below, the distance from the sea being the 

 same in both cases : 



Percentage of sodium chloride. 



Plains below. 



Hav 0.254 1.017 



Wl'iite clover 0. 2jS5 0.505 



Tliynu' 0.145 0.238 



Kye straw 0.054 0.127 



The milk of cows from mountainous regions was found to contain on an 

 average 1.083 grams and that of cows from the lower land 1.35 grams 

 of sodium chloride per liter. 



Treatment of apple scab and of grape and gooseberry mildew, 

 J. Craig {Canada Central Expt. Farm Bui. No. 10, April, 1891, pp. 15). — 

 Brief popular statements regarding apple scab {Fusicladium dendrit- 

 icum), grape mildew {Peronospora viticola), and gooseberry mildew {Sphce- 

 rotheca mors-uvce), with suggestions regarding the treatment of these 

 diseases. Short accounts are given of experiments under direction of 

 the author with ammoniacal carbonate of copper and other fungicides. 



Recommendations for the prevention of damage by some com- 

 mon insects of the farm, the orchard, and the garden, J. Fletcher 



{Canada Central Expt. Farm Bui. No. 11, May, 1891, pp. 30, Jigs. X-'.s), — 

 General statements regarding insects, means of repression, spraying 

 apparatus, and the i^reparation and use of various insecticides. 

 !Xotes are also given on the following insects, with suggestions as to 

 remedies : American frit fly {Oscinis variabilis), clover seed midge {Ceci- 

 domyia legmninicola), Hessian fly {Cecidomyia destructor), pea weevil 

 {Bruchus pisi), wheat midge {Diplosis tritici), wheat stem maggot 

 {Meromyza amerieana), apple aphis {Aphis mail), beautiful wood nymph 

 {Eiidryas grata), cankerworms {Anisopteryx vernata and A. pometaria), 

 8511— i^o. 3 5 



