436 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



sightly after dust settles upon it. The only proper way to 

 completely remove the grease is to lay the soiled part of the 

 garment upon several folds of white blotting-paper, moisten 

 it thoroughly with benzine or turpentine, place several folds 

 of blotting-paper upon it, and press with a cold iron. The 

 operation should not be conducted near a naked flame, since 

 benzine is very volatile and combustible. 9 6", July, 1873,109. 



BLEACHING SHELLAC BY BONE-BLACK AND SUNLIGHT. 



Shellac bleached by the ordinary process affords a polish 

 for light woods, etc., that is brittle and liable to peel oft*, 

 while the presence of a trace of chlorine causes metallic in- 

 laying to become dim. These defects may be avoided by a 

 different mode of bleaching namely, by adding fine granu- 

 lated bone-black to the solution of shellac in ninety per cent, 

 alcohol until a thin, pasty mass is formed, and exposing 

 this for several days to direct sunlight, occasionally shaking 

 it thoroughly, and filtering when sufficiently bleached. 5 C\ 

 1873, xxxvi., 288. 



NEW ITALIA^ METHOD FOR PRESERVING GRAPES. 



It is said that grape clusters can be preserved until Easter, 

 as fresh and palatable as when cut, by gathering them in 

 small quantities, on clear, dry days, removing any decayed 

 berries, fuming them with benzine, and laying them (not in 

 contact, however) between fine corn -leaves, in drawers or 

 trays carefully closed against the air and dust. 9 C\ July, 

 1873, 105. 



NEW METHOD FOR PRESERVING MEAT. 



According to Endemann, meat cut in slices and placed in 

 a room the air of which is heated to 140, and only allowed 

 to enter and escape through cotton filters, becomes so dry 

 in three hours that it can be ground, and, since the albumen 

 and fibrine are not coagulated, it loses none of its nutritive 

 properties. 5 (7, 1873, xxxix., 312. 



WINDHAUSEN REFRIGERATING MACHINES. 



It is stated that in New Orleans several refri^eratino- ma- 

 chines of the Windhausen pattern, which operate by expand- 

 ing compressed air, have been constructed that are compe- 



