e 
Bibliography. 15 
“lait-viande.” It is prepared as follows. Into a Papin’s digester three kilo- 
grams of fresh pounded bones are put and one kilogram of meat, with five 
or six times as much of water. The top is hermetically closed: double 
sides surround it, and in the cavity between, a current of steam circulates 
which raises the temperature of the digester up to 140° F. e 
of forty minutes after reaching this temperature, a stop-cock with a small 
orifice is opened which lets out a vapor having the odor of broth; but 
some seconds after, there issues a white liquid which is nothing but the 
artificial milk. After this milk has passed out, the digester contains only 
the meat, the boiled bones, and a soup of inferior quality. The artificial 
milk resembles milk in color, consistence, odor, and even taste. But in 
Paris; but there were some novelties. Heliographic engraving, brought 
of Paris, deserve special mention. There was one of 14 inches which 
would answer for obtaining pictures 1°6 meters to 1:2. There was a 
portrait taken on a glass 60 centimeters by 80, with a double objective of 
22 centimeters diameter. The objective was furnished with a. conical 
centralizer, 
Brsuiocrarny.— Traité d’Electricité théorique et appliquée, par A. De 
la Rive. Vol. Il, 836 page. Paris: Bailliére——In announcing the Is 
calorific and luminous effects; the 
the physiological effects of dynamical electricity on 
ch as heat, 
mechanical actions, and finally the chemical actions to which De la Rive 
has himself contributed so Saouals The mathematical branch of the 
subject is treated in a chapter by itself, and a note 1s devoted to the mathe- 
matical theory of the pile. The 3d volume will appear next year. 
Elémens de Cos iphie, par Costam 1 vol, in 12mo, with an 
¢ Par; 
Meédeci : 7 Dr. Bea |. -Lvol. in 12mo, Paris: 
ped etait par le Dr. — dee ae 
. elegraphie é trique, é +8 * 
object of this small work, which has passed rapidly to a 2nd edition, is to 
Popularise the subject of the Telegraph. are 
. 
f 
