320 BOARD OF AGRICULTURE. 



dental access of a bone. Fair samples as they have been 

 sold from time to time in our vicinity are not worth more 

 than air-slacked lime : they contained from seven hundred 

 and fifty to nine hundred pounds of calcium oxide or lime. 

 The weight of a bushel varied, mainly in consequence of 

 more or less moisture, from forty-four pounds to sixty-three 

 pounds : it is, for this reason, best to buy it by measure in- 

 stead of by weight. From thirty-three to thirty-five cents 

 have been charged for the bushel of limekiln-ashes. 



Gas-Huuse Lime. 



(Sent on for Examination.) 



Per cent. 



Moisture lost at 100° C 11.01 



Calcium oxide 45.80 



Total amount of sulphur present . . . .8.20 

 Insoluble matter, sand, &c .3.51 



In a former report (IV. Rep., 1876-77) I discussed some- 

 what in detail the circumstances which control the com- 

 position, and thus the value, of the gas-house lime, as well 

 as the proper treatment the latter has to undergo before 

 it can be safely applied for agricultural purposes. In com- 

 paring the above-described sample with those mentioned in 

 the report referred to, there is one point of difference in 

 their composition which deserves particular attention when 

 speaking of their relative agricultural value ; namely, the 

 amount of sulphur found in the above specimen is four times 

 as large as in either of the previously reported samples, — a 

 fact which furnishes a good illustration regarding the degree 

 of differences which may be noticed in the value of gas-house 

 lime from different gas-manufacturing establishments. 



, The Vltative Compound ; or, Seed and Plant Invigoratnr. 



(Wangaman & Co., Blairsville, Penn.) 



The sample tested was obtained from President W. S. 

 Clark, Amherst, Mass. 



