K. DOMESTIC AND HOUSEHOLD ECONOMY. 455 



Gilt frames, etc., should only be washed with pure water, 

 rubbing very gently with a soft sponge or brush. 5 C, 1874, 

 xxiii., 184. 



japanese mode of preserving meat in summer. 



The meat is covered completely, in a porcelain bowl, with 

 very hot water, and oil is then poured upon the water. The 

 air is thus excluded, and the coagulation of the albumen in 

 the external part of the meat doubtless aids in preserving it. 

 9 6 y , June, 1874, 90. 



DANGER OF CLEANING BOTTLES WITH SHOT. 



A communication to the Paris Academy condemns the use 

 of shot in cleaning bottles, as practiced in many households, 

 on the ground that carbonate of lead may be formed in shak- 

 ing them with water, and that some shot, with their not in- 

 considerable amount of arsenic, may possibly remain in the 

 bottle. 10 C,May, 1874, 80. 



AUTOMATIC GAS-LIGHTER AND EXTINGUISHER. 



Instead of electricity for lighting gas, Baumeister employs 

 a small accessory flame, which burns all day, with a con- 

 sumption of 0.04 cubic feet per hour, or even less, although, 

 when less than 0.03 cubic feet, the flame is liable to be extin- 

 guished by draft. By regulation of the pressure this flame 

 is made to flare up and ignite the principal jet, and it then 

 goes out; and again by a change of pressure the principal 

 flame is extinguished, and the small one relighted, and the 

 flow of gas to the principal burner again completely checked. 

 There is also an attachment, which, under the average press- 

 ure, allows only a definite flow of gas through the burner, 

 and which, it is suggested, can also be arranged as a simple 

 and convenient pressure regulator. 18 C, May 13, 1874, 304. 



IMPROVED GAS FURNACE. 



An improved gas-burning apparatus, for heating purposes, 

 was exhibited at the recent international exposition in Lon- 

 don. It is, in reality, an improved form of Bunsen burner, 

 and consists, in principle, of a brass tube, throwing a jet of 

 gas into a hemispherical chamber into which air, as well as 

 the gas, is driven by the expedient of having an opening, or 



