110 Memorial on the upward forces of Fluids. 
A very easy mode, to try an experiment, for the purpose 
of preparing this explosive air mechanically, is to have made 
_ a few feet of inch tubes, of common tin plate. These tubes 
should be turned, once in about a foot, at right angles, and 
the long aie a be filled with small tubes, about 4 of an 
inch in diameter. If air is made to pass through this erook- 
ed tube, while it contains a single spoonful of high proof 
sas and spirit of turpentine, with a pr temperature, 
it comes out highly — if the current is forced through 
by a hand bellows, with ever so much velocity. As we 
now construct the engine i preparing vessel, it is impossi- 
- ble that an explosion can take place, that will injure any one. 
A few drops of these liquors, on a board in the sun, with a 
tumbler inverted over them, will explode in a short time, if a 
flame is applied. 
It will not, I trust, appear surprising, that these i improve- 
ments are. — nted. 
, dear sir, YPRRiy most respectfully, 
SAMUEL Morey. 
P.S. Lam sensible, that a drawing ought to accompany 
chia paper, but at present, it is out of my sce to furnish one. 
2 Memorial on the upward forces of Fluids, and 
thelr applicability to several arts and sciences, and public 
improvements ; for which a patent has been granted by the 
government of the United States to the auther, Edmund 
Charles Genet, a citizen of the United States, member of 
the Institute of France, of the Roy J 
y of London, of the Philosophical Society of New- 
k, &c. Analysis by Fetrx Pascanis, M.. D. 
oe of the American ge BS of the Linn 
of Paris, &c, &c. = eae 
Hau F an age has elapsed since the discovery ee 
tion, Montgolfier, aa anes a great number oe a 
menters an to engage i excursions, some for the 
sake of remuneration, ters for scientific purposes and pub- 
lic ay: How many ascensions ‘ave been made, in all pos- 
s, and with different gaseous fluids, could hardly be 
