450 Miscellaneous Intelligence. 
twenty-four letters. Upon their separating from one another into dis- 
tant countries, they agreed to withdraw themselves punctually into their 
closets at a certain hour of the day, and to converse with one another 
every letter that formed the words that he had occasion for—making a 
little pause at the end of every word or sentence, to avoid confusion. 
The friend, in the meanwhile, saw his own sympathetic needle, moving 
of itself to every letter which that of his correspondent pointed at. By 
this means, they talked together across a whole continent and conveyed 
their thoughts to one another, in an instant, over cities or mountains, 
seas or deserts.” 
for the linear dilatation of ice between 0 and 80° R. zt, which is 
more than double that obtained at Ratisbonne. It has also been 
found that between the temperatures stated, the dilatation is perfectly 
uniform. 
9. Bear River Springs, Rocky Mountains, (Expl. Exped. of — 
19 . 
