294 Transactions of tee American Institute. 



in a week. More sap can be had and tlie trees hurt less. We clarify 

 with the whites of eggs — two eggs to twenty-five pounds. 



Mr. Solon M. Daboll, North Stephentown, Xew York. — I send you a 

 small specimen of the stony substance deposited from maple sugar 

 during the boiling process. The trees which produced it grow on a 

 Falcon slate soil. The amount produced is about the same one year 

 as another, but the sap which runs last in the season has a much 

 larger quantity than the first run. The specimen Avas scraped from 

 a pan used for sugaring off. 



Mr. James A. Whitney. — This brown powder consists mostly of a 

 compound of lime, which is found in most hard wood sap with malic 

 acid. The advancing heat of spring develops more of this acid in 

 the sap, and the formation shows that the sugaring season is nearly 

 ended. There may be some mag-nesia in it. It does little or no 

 harm. 



To Keep Maple Sugar. 

 Mr. G. K. Edgerton, Wlieatfield, Michigan, has sent this recipe to 

 teep maple sugar : " Tlie main point is not to overdo in sugaring 

 off; better take it from the fire and have it drain a little ; spread 

 out until it dries, and then pack away from smoke and bad air." He 

 has kept sugar in this way for two seasons. 



LODI PorDEETTE. 



Mr. E. B. Bartlett, Kingston, ]S[. H. — Can some one of your 

 numerous members give me any information in regard to the double 

 refined poudrette, manufactured by the Lodi Manufacturing Company, 

 N. J. The company say it is equal to the best super-phosphate, and 

 they offer it at thirty dollars per ton in Boston. I have never heard 

 of its being used in this section, and so I thought I would inquire of 

 the Club, thinking some of your members may have used or seen it. 



Mr. James A. Whitney. — I have of late made a careful investigation 

 of the qualities of this fertilizer. It is dried night soil, robbed of its 

 foul odor by carbolic acid. In the " double refined " this is mixed 

 with the decay of refuse from slaughter-houses. It is lively, stimu- 

 lating manure, acts at once, and is suited to short seasons and quick- 

 growing crops. It has more ammonia than phosphoric acid, and 

 wiU grow leaf, stem, and stalk better than ear or head of grain. It 

 ceases to act with vigor in six weeks or two months after application. 

 and does not give lasting value to the soil, but urges crops forward 

 in May and June 



