REPORT OF THE STATE ENTOMOLOGIST 1904 389 



Wash I. Prepared Ap. i, 1904. Water was brought to a boil, 

 lime put in, and as soon as the slaking was well begun, the soda 

 carbonate was added, followed immediately by the sulfur. Chem- 

 ical action began at once and a change in color from white to orange, 

 to red, to brick-red, was obserA^ed. At the end of 15 minutes a 

 deep brick-red color showed that considerable combination had 

 taken place. The solution was good, strongly alkaline, and on 

 being allowed to settle, a clear orange-colored liquid was left. The 

 precipitate is very fine with no tendency to crystallize, even on 

 the 5 th. 



Wash 2. Prepared Ap. 2. Water was brought to a boil, lime 

 put in and the carbonate of soda added as above, and also the sul- 

 iur. Chemical action began at once and the color changed from 

 white to purplish orange, orange-red and then to a brick-red, 

 though not so deep as that noted above. The combination was 

 slower and a less amount apparently, combined and dissolved and 

 rthe precipitate was coarser. On being allowed to settle a brick-red 

 colored liquid was left, and on the 4th numerous brick-red crystals 

 were observ^ed throughout the body of the precipitate and the 

 same was true on the 5th. 



Wash 3. Prepared Ap. 2. Water was brought to a boil, the 

 carbonate of soda added, followed by the sulfur. It was stirred 

 five minutes and the lime then added. A fiaky precipitate was 

 formed on the addition of the lime which was not dissipated by 

 boiling. The solution contained many flakes at the end of 30 

 minutes. Colors were apparently about the same as in no. i. 

 On the 4th many very light flaky particles were obser^^ed near 

 the top of the nearly brick-red liquid, and numerous brick-red, 

 needle-shaped crystals were observed in the somewhat greenish, 

 rather coarse precipitate at the bottom. This condition continued 

 on the 5th. Combination was not nearly so satisfactory as when 

 the lime, soda carbonate and sulfur were added in the order given. 



Wash 4. Prepared Ap. 2. The lime was added to the almost 

 boiling water, and as soon as slaking began, carbonate of soda was 

 put in, followed immediately by the sulfur. Chemical action began 

 at once and was slower than in no. i, 30 minutes boiling being re- 

 quired for an approximately equal combination. The solution 

 then was orange in color, very similar to no. i, although showing 

 a few more flakes and being a little coarser. On the morning of 

 the 4th the brick-red colored liquid above was fully as darkly col- 

 ored as in no. i, but numerous brown, needle-shaped crystals had 

 formed throughout the rather coarse precipitate, as in the case of 



