36 LIFE OF BENJAMIN SILLIMAN. 



If Mr. Griscom, whose acquaintance I had the pleasure 

 of making in Paris, has returned to New York, I beg you 

 to remember me to him. If an exchange of the minerals 

 of America for those of Sweden and Norway would be 

 agreeable to you, you have only to let me know, and to tell 

 how you would like this exchange to be effected. 



Receive, Sir, the assurance of the high consideration 

 with which I have the honor to be 



Your very humble and very obedient servant, 



JAC. BERZELIUS. 



STOCKHOLM, March 20, 1822. 



SIR, I am very happy to learn that the 



minerals have arrived in safety, and that you are satisfied 

 with them. I willingly take advantage of your kind offer, 

 to ask from you some American minerals, of which almost 

 any would be welcome for a beginning, since we have but 



but very few here I take the liberty of sending 



you a copy of the French translation of my work upon the 

 Blow-pipe, since you do not read German. I am particu 

 larly interested to have you judge my work as it is, and not 

 as Mr. Children has rendered it ; for some of my pupils 

 now in England write me that Mr. Children, whose trans 

 lation of my work I have not yet seen, has injured it in 

 several places, sometimes by changes, in others by abbrevia 

 tions, and in others by his own notes. I hope soon to be 

 enlightened on this subject through my own eyes. 



Your experiments with the deflagrator have interested 

 me much. I have one almost completed, and I look for 

 ward with pleasure to the brilliant phenomena which I am 

 about to witness. The discordance of the ordinary pile' 

 with the deflagrator appears inexplicable to me, except by 

 the theory of Mr. Hare, which, though ingenious, I find if 

 difficult to admit, since the electro-magnetic phenomena 

 are in all their characters the same as in the ordinary elec 

 tricity. I have nothing important to communicate to you 



