208 



TllK A-MKUU AN .MoN ^11LV 

 M l( HOSCOIUI A L M V M I»r L ATION. 



[.July, 



A Means of Recognizing Frozen Meats. — M. Maljeaii 

 in the Archiccs dc Mcdtcinc MilUnire, says: This means is 

 based on the aspect of the jilohules of bU>o(l obtained by 

 scrnpinjr. In the frozen meats, these jzlobules are colorless, 

 deformed and tloat in a preenish serum. Tliere is no loiifjer a 

 einjile one in the normal state. The cold makes the red jilobu- 

 les burst : then the coloring matter is extravasated in the serum, 

 where it is found again under the form of irregular crystals 

 colored yellowish brown. 



To Open A Rusty Knife. — We are indebted to The Inventive 

 Age, for llic following article and for the use of the cuts with 

 which to illustrate it. 



Take apiece of soft but strong cord, wind it tightly from 

 ten to fifteen times around the closed blades of the knife and 

 of the knife body itself as shown in Fig. 1. Hold or tie the 

 remaining end of tlie cord to your middle finger. Find a gras.sy 



Fig. 1. 



Fig. 2. 



spot or solt place and throw the knife down with all your might, 

 just as you do in spinning a top and as shown in Fig. 2. The 

 centrifugal force, caused by the unwinding of the cor-l and the 

 rapid rotation of the knife will make the blades Hy open like 

 the balls on a governor of a steam engine. 



