406 
Sewn tijlc IntelligeRcc. 
ascended to it tit the instant of congelation. The oil, however, 
remained liquid, though exposed to a degree of cold much 
greater than that at which it freezes, and did not freeze for two 
or three hours after the water appeared to be frozen. This ef- 
fect was owing to the disengagement of the latent heat of the 
w'ater, during its conversion into ice. 
SO. Antidote against Corrosive Sublimate. — In the course of 
. his experiments on gluten, Dr Taddei found, that wheaten flour 
and gluten, reduced corrosive sublimate to the state of calomel, 
and that considerable quantities of a mixture of flour or gluten, 
with corrosive sublimate, might be taken by animals without 
any injurious effects. In this way, fourteen grains of sublimate 
were given in less than twelve hours to rabbits and poultry 
without injury, whereas a single grain would have been fatal, if 
taken alone. In order to render a grain of the corrosive subli- 
mate innocent, S5 grains of fresh gluten, or 13 of dry gluten, 
or from 500 to 600 grains of wheaten flour are necessary. — 
Giornale di Fisica^ ii. p. 375. 
91. Chrome the characteristic ingredient of Meteoric Stones. 
— Nickel has hitherto been considered as the most characteristic 
ingredient of meteoric stones, because it has been found in con- 
siderable quantity, and has also been met with in meteoric iron. 
As chrome was not found in the meteoric stones which fell at 
Stanneren in Moravia, it has been regarded as less characteristic 
of them than nickel. M. Laugier, however, has found, that the 
meteoric stone which fell at Jonzac on the 13th June 181 9? 
contained no nickel, as appears from the following analysis : 
Oxide of Iron, 
36 
Silex, . - - 
46 
Alumiue, - . _ 
6 
Lime, - - - 
7,50 
Oxide of Manganese, 
2.80 
Magnesia, - - _ 
1.60 
Sulphur, - . - 
1.50 
Chrome, . - _ 
1 
102 . 1 ^ 
In re-examining the stone which fell in Moravia, he has also as- 
certained that it actually contains a half per cent of chrome ; 
and hence he concludes, that in so far as our knowlege goes. 
