234 Miscellaneous Intelligence. 
the results I have stated. fisg 
These facts demonstrate that in the drop the glass 1s In no pe- 
culiar condition other than that which arises from the unequal ex- 
gree the explosive properties of Rupert’s drops. They have al- 
most always the form of cork-se 
hi r 
Appert at La Villette, presented an interesting phenomenon: 0P 
slightly squeezing it between my finger and thumb, a considerable 
is, 
whatever cause, cooled with sufficient suddenness to be in a very 
h 
least shaking, or the slightest change of temperature, will a 
349.—Phil. Mag., June, 1873. 
