K. DOMESTIC AND HOUSEHOLD ECONOMY. 427 



baking-soda. They will not only be rendered softer in this 

 way, but also more palatable and digestible. The addition 

 of the soda to the water in which they are boiled does not 

 answer the purpose as well, and in such case care must be 

 taken not to add too much soda at most only three to four 

 times as much as will lie on the point of a knife to the quart 

 of water. 10 C\ June 1, 1876, 92. 



GLYCEEINE-GELATIX FOR PROTECTING PRESERVED FRUIT. 



A composition of glycerine and gelatin, similar to that 

 employed for printers' rollers, but of purer materials, is rec- 

 ommended for 23rotecting preserved fruit, etc., from the ac- 

 tion of the air and fermenting agencies. A thin layer of the 

 fused mixture is simply poured upon the fruit and allowed 

 to harden. It can be readily removed, and may be used 

 again for the same purpose by melting it on a water bath. 

 13 (7, Marj 1, 1875, 583. 



SUBSTITUTE FOR EXTRACT OF MEAT AND PRESERVED MEAT. 



lingerer considers all the processes proposed for the ex- 

 traction of meat or its preservation as liable to the objection 

 of loss of a portion of the nutriment, or of complexity and 

 expensiveness. He suggests, therefore, the following plan 

 for utilizing the supply of meat in the less densely inhabited 

 portions of the earth, by the conversion of it at little ex- 

 pense into a preparation which contains all the nutritious 

 qualities of the fresh meat, and satisfies all requirements as 

 to keeping. He dries the chopped meat at a temperature 

 but little above 212, under such conditions that all the wa- 

 ter is expelled in less than half an hour, and the residue can 

 then be converted into a fine yellowish powder, which, for 

 convenience in packing, may be pressed into cakes or blocks. 

 14 (7, CCXX., 382. 



ICE-CELLARS ON BRAINARD's PLAN. 



The chief object in the plan for ice -cellars patented by 

 Brainard is to prevent the deposition of the moisture in the 

 air upon the walls, which injures them, and which also, by 

 running down upon it, occasions a waste of the ice. The 

 improvement is accomplished by placing a corrugated tin 

 covering above the supply of ice, upon which all the moist- 



