100 The Compound Blowpipe. 
pushed farther than his own, anda good many new results 
added. : | 
It was therefore with no small surprise that, in the Annales 
de Chimie et de Physique, for September, 1816, I found a 
translation of a very elaborate memoir, from a Scientific 
Journal, published at the Royal Institution, in London, in 
which a full account is given of a very interesting series of 
experiments, performed by means of Mr. Hare’s instrument; 
or rather one somewhat differently arranged, but depending 
on the same principle. Mr. Hare’s invention is slightly men- 
tioned in a note, but no mention is made of his experiments, of 
of mine. 
On a comparison of the memoir in question with Mr. Hare’s, 
and with my own, I find that very many of the results are iden 
‘ tical, and all the new ones are derived directly from Mr. Hare’s 
invention, with the following differences—In Mr. Hare’s, the 
two gases were in distinct reservoirs, to prevent explosion; 
they were propelled by the pressure of a column of water, 
and were made to mingle, just before their exit, at a comma 
orifice. In the English apparatus, the gases are both in one 
reservoir, and they are propelled by their own elasticity, aftet 
condensation, by a syringe. 
Professor Clarke, of Cambridge University, the celebrated 
traveller, is the author of the memoir in question; and we 
must presume that he was ignorant of what had been done by 
Mr. Hare and myself, or he would candidly have adverted 
the facts. 
It is proper that the public should know that Mr. Hare wa 
the author of the invention, by means of which, in Europ 
they are now performing the most brilliant and beautiful 
experiments; and that there are very few of these resulls 
hitherto obtained there, by the use of it, (and the publication 
of which has there excited great interest,) which were not, 
several years ago, anticipated here, either by Mr. Hare or bY 
myself. 
As Lhave cited only printed documents, or the testimony 
of living witnesses, I trust the public will not consider this 
communication as indelicate, or arrogant, but simply 4 mat: 
cme 
