REPORT OF THE STATE ENTOMOLOGIST I904 39I 



as coarse as that in no. 8, and the clear liquid above has a dis- 

 tinct brick-red color, due probably to the presence of calcium sul- 

 fid, indicating some combination. 



Wash 10. Prepared Ap. 4. This is the same as no. 9, except 

 that boiling was continued for 30 minutes, and examination on 

 the 5th showed little difference in the fineness of the precipitate, 

 though the clear liquid above was somewhat darker. 



Wash II. Prepared Ap. 4. This is the same as solution no, 9, 

 except that boiling was continued for 50 minutes, and there 

 was practically no difference to be discerned between this and solu- 

 tion no. 10. 



Wash 12. Prepared Ap. 4. This is the same as solution no. 

 9, except that boiling was continued for one hour and 30 minutes, 

 and there seems to be practically no difference in the appearance 

 of this solution and no. 9 or its other modifications. These 

 later boilings necessitate the addition of water sufficient to make 

 up the loss by evaporation, but otherwise conditions were identical. 

 There were no signs of crystallizing in other than washes 2, 3 and 4. 



