K. DOMESTIC AND HOUSEHOLD ECONOMY. 449 



if three days, it floats in the liquid ; and if more than five, it 

 comes to the surface, and projects above in proportion to its 

 increased age. 11 2?, October 15, 1873,559. 



COCKROACH AND CRICKET EXTERMINATOR. 



An approved remedy for the undue presence of these in- 

 sects is prepared by mixing two parts, by weight, of fine flour 

 with four of white sugar, one part of powdered borax, and 

 one of unslacked lime, thoroughly stirring the whole togeth- 

 er. Keep the powder in a perfectly dry place. For use 

 strew some of the powder on paper placed in the infested 

 place (taking care that no liquids remain uncovered), and re- 

 peat this process several nights in succession. 9 6 r , July, 

 1873,101. 



PREVENTING FLIES FROM ANNOYING HORSES. 



According to Rochard, a French veterinary surgeon, a sim- 

 ple method of preventing flies from annoying horses consists 

 in painting the inside of the ears, or any other part especially 

 troubled, with a few drops of empyreumatic oil of juniper. 

 It is said that the odor of this substance is unendurable to 

 flies, and that they will be kept at a distance from the parts 

 so anointed. If this treatment should accomplish the alleged 

 result, it may perhaps be equally applicable in repelling mos- 

 quitoes from the faces and hands of tourists and sportsmen, 

 when passing through woods or meadows. 20 A, October 18, 

 1873,442. 



ASPHYXIATING BURGLARS. 



The manufacturers of vaults and safes for the preservation 

 of valuables, and also those whose profession it is to enter 

 them for the purpose of plunder, continue to develop a vast 

 amount of ino;enuitv. Almost as soon as we have the tri- 

 umphant announcement of absolute security as the result of 

 some combination or construction, we find that the device has 

 been successfully evaded. All the arrangements of chilled 

 iron and other modes of protection seem to be of no value 

 against the efforts of experienced " cracksmen," and attention 

 now appears to be directed toward the addition of defensive 

 weapons that shall maim or otherwise injure the intruder. 

 One of the most recent devices of this kind consists in what 



