EXPERIMENT STATION BULLETINS. 



343 



ii 



4818 

 4819 

 4820 

 4822 



4821 



4823 



4824 



4825 

 4826 

 4827 



4828 

 4829 

 4830 

 4831 

 4832 



4833 

 4834 

 4835 

 4836 



4837 

 4838 

 4839 

 4840 



Manufacturer. 



A. B. Ansbacher, New York City 



Jas. A. Blanchard, St. Joseph, Midi , . . . 

 Jas. A. Blanchard, St. Joseph, Mich. . . . 

 Carpenter-Udell Chem. Co., 



Grand Rapids, Mich 



Carpenter-Udell Chem. Co., 



Grand Rapids, Mich 



Carpenter-Udell Chem. Co., 



Grand Rapids, Mich 



Carpenter-Udell Chem. Co., 



Grand Rapids, Mich 



Dow Chem. Co., Midland, Mich 



Dow Chem. Co., Midland, Mich 



Dow Chem. Co., Midland, Mich 



Dow Chem. Co., Midland, Mich 



Dow Chem. Co., Midland, Mich 



Dow Chem. Co., Midland, Mich 



Grasselli Chem. Co., Cleveland, Ohio. . . 

 Sanocide Spray Co., Fennville, Mich. . . 



Sherwin-Williams Co., Chicago, 111 



Sherwin-Williams Co., Chicago, 111 



So. Haven Chem. Co., So. Haven, Mich 

 So. Haven Chem. Co., So. Haven, Mich 



Toledo Rex Spray Co., Toledo, O 



Toledo Rex Spray Co., Toledo, O 



Toledo Rex Spray Co., Toledo, O 



Van The Tool Man, Lansing, Mich 



Baum6. 



Total Sulfur. 



Found. 



31.8 

 31.5 



32.0 



32.0 

 33.8 

 33.4 

 33.9 



33.7 

 33.4 

 33.3 

 33.0 

 32.5 



32.5 

 30 



32.2 

 33.0 



32.7 

 32.5 

 32.7 

 31.0 



Guar- 

 anteed. 



32.4 33 



32.3 



30.8 



33 

 33 

 33 



33 

 33 

 33 

 33 

 32 



32 



31 

 31 

 31 



Found. 



25.04 

 24.94 

 22.47 



24.23 



23.56 



24.39 



24.62 

 26.51 

 25.98 

 26.18 



25.84 

 25.79 

 25.30 

 25.64 

 25.17 



24.61 

 23.02 

 24.65 

 25.16 



25.33 

 25.38 

 25.20 

 23.80 



Guar- 

 anteed. 



% 

 24 

 20 

 20 



23 



23 



23 



23 

 25 

 25 

 25 



25 

 25 

 25 

 26 

 25 



23 

 24 



24 

 24 

 24 

 23 



(1) 

 £ 



-3 



E <" 

 o 



% 



29.48 

 20.54 

 27.56 



28.88 



27.42 



29.31 



29.48 

 31.63 

 31.34 

 31.25 



30.79 

 30.81 

 29.84 

 30.88 

 29.63 



29.14 

 27.33 

 29.82 

 30.23 



29.43 

 30.24 

 29.45 

 28.76 



SOLUBLE SULFUR COMPOUND. 



Three samples of Soluble Sulfur Compound manufactured by the 

 Niagara Sprayer Co. were analyzed. In making this material a com- 

 pound of sodium is used instead of lime. It is granular and readily 

 soluble in water but deteriorates rapidly if exposed to the air. The 

 package containing it should be tightly closed at all times. 



LEAD ARSENATE. 



The insecticide law tixes the standard for lead arsenate, making it 

 compulsory for all samples to contain at least 12.50% arsenic oxide and 

 not more than 0.75% arsenic oxide soluble in water nor more than 50% 

 water. 



The results of analysis show that all the samples comply with the re- 

 quirements demanded by law, with one exception, in which case, the 

 water-soluble arsenic oxide is slightly above the legal limit. 



