INJURIOUS INSECTS OF 1903. 



37 



and manufacturer, results of tests in Entomological Labora- 

 tory, chemical analysis, etc. : 



Drawing. 



Chemical Analysis 



See Fig. 15. 



See Fig. 16. 

 See Fig. 17, 



See Fig. 18, 



52.05 



53.00 

 58.30 

 54.29 

 52.98 

 51.64 

 51.84 

 53.70 

 51.81 

 54 54 

 55.30 

 52 48 

 55.69 

 55.75 

 55.53 

 58.70 



Soluble 

 Arsenic. 



Per cent. 

 .74 



.50 



1.85 



3.00 

 18.00 

 .95 

 1.36 

 1.61 

 1.62 

 3.95 



3 72 

 4.08 



4 08 

 2.92 

 4.61 

 3.29 

 3.19 



Purcha.ser. 



Date of 

 Purchase. 



F. L. Washburn I 



h\ L. Washburn. 



N. W. Monson. . 

 E'. L. Washburn. 



F. A. Malmberg, 



Bernadotte 



E. A.Holt, Delhi.... 



E. A. Holt, Delhi.... 



E. L. Peterson, Daw- 

 son 



E. L. Peterson, Daw- 

 son 



J. S. Carlton 



J. 8. Carlton 



B. A. Holt, Delhi... 



E. A. Holt, Delhi ... 



Carl Lingen 



E. P. Ferch, Odessa. 



L. J. Sheldon, 

 Paynesville 



April 25, 1903 



May 18, 1903 

 May 5, 1903. 



April 22, 1903 



April 22, 1903 

 May 23, 1903 



May 23, 1903 



April 27, 1903 



May 5, 1903. 



June 1, 1903 



When Price 



Received. 1 Per Lb. 



May, 1903 

 May, 19U3. 



May, 1903. 



May, 1903.... 



May, 1903.. . 

 May 29, 1903. 



May 29, 1903. 



May, 1903.... 



May, 1903... 



May 11, 1903. 



15c }4 lb. 

 35 cents 



35 cents 



40 cents 



35 cents 



40 cents 



10c 14 lb. 



J. A. Hummel, Assistant Instructor in the Chemical Department. 



REMARKS. 



11 — Sodium sulphate present. 



12- Moisture 1.17, NaoSoi .84, CuO 30.20. Purchased wholesale from Noyes Bros. 

 & Cutler. 



13— Manufacturers not known, purchased through jobbers. 



14— Moisture .92, Na2So4 .95, CuO 30.35, acetic acid, etc., 13.24. 



15— Cover found cut open when purchased. NaoSo^ 1.09, moisture 1.10, CuO .30.38, 

 acetic acid, etc., 12.13. 



16— Left over from last year's stock. NaoSo^. 



17— Na2804 present. 



18— Na2So4 present. 



19— Na2So4 present. 



