300 Scientific Inlelligence. 



of prussic acid, the most active poison known, even after it had gone 

 far towards producing death. It is therefore credible, that it may 

 destroy other poisons, having a similar constitution ; and we can 

 readily understand the modus operandi in such cases ; for chlorine 

 takes hydrogen from every combination, and of course destroys the 

 peculiar character of the compound. Prussic acid itself consists of 

 nothing but the ordinary elements of animal matter, such as are daily 

 used for food ; but in the acid they are combined in a peculiar man- 

 ner, and the withdrawing of hydrogen from it, at once subverts the 

 combination, and renders it harmless. 



The practical use which we would make of the facts which we 

 know, and of the theoretical views which we entertain, is, that chlo- 

 ride of lime should be kept in every family ready for instant use in 

 the multiplied cases in which it is applicable. 



It is already manufactured in this country in large quantities, and 

 we observe with great satisfaction, that it is hereafter to form a part 

 of the stores of our ships of war. This will greatly encourage the 

 manufacture, and the time is not distant, when the price will be much 

 less than at present.* 



We add with pleasure that Labariiaq.ue's celebrated pamphlet on 

 the uses of the chlorides of lime and soda has been recently 

 translated by Dr. Jacob Porter, of Plainfield, Mass. and is to be 

 sold by the principal booksellers. Some additions have been made 

 by the translator, from recent publications, and we trust that this 

 little work will contribute to extend the knowledge of this subject. 

 * * * * * * -;:- ■x- * 



We would observe that as there are various chloric preparations, 

 and of course an endless diversity of cases in which they may be ap- 

 plied, we should not give over, even should they not prove effectual in 

 every instance ; for some variety in strength, and mode of prepara- 

 tion, and application, may be necessary to accommodate the remedy 

 to different cases. 



23. Crystallization of Tin. — Mr. Allard, rue St. Lazare, No. 11, 

 to whom we are indebted for the means of producing upon metal- 

 lic plates, the most brilliant changeable lustre, creates also upon 

 tin plate a varied and splendid play of light to which he has given the 

 name oi moire metallique. 



** We undeislaiid about eight or nine dollars per cwt. — double this rate or a little 

 more, at retail. 



