146 
catches. Thefe.are accurately defcribed, 
and reprefented by drawings, in the fpeci- 
fieation. The invention is not confined 
to any particular razors, but applicable to 
ail; nor is it-corfimed to the exaét thape 
or form. of the {prings, as they may be va- 
yied witheut departing either. from the 
particular or geaeral principle of. any: of 
the improvements. fet forth in the Ipecifi- 
gation. 34 
MR. STEERS'S, for am Engine producing a 
» Force, by the Impetus nubich.the Parts of 
a Fluid Body have to an equal. Altitude, 
appiscable ta the Working of all Sorts of 
Machinery. s 
it is difficult to defcribe the engine 
without the affifiance ofa drawing; but 
the following reprefentation may. perhaps 
convey fome idea of it. Suppole a cylin= 
der open at ene. end, and ‘tanding on the 
ether, and. another. cylinder j-within.. it, 
clofed at both ends, filling it fo exaGily 
with refpedt to its width, ‘that no liquid 
ean. pafs. between them; then fuppate a 
long tube ere&t, clofed at the-lower.end, 
connected with the outer cylinder bya 
pipe which pafles frem the lower end:of 
ene into the lower end. of the other, 
through which liquid can. pafs from.one 
inte the other. The long tube is: made 
to turn upon the pipe, fo that it may be 
Literary and Philjfephical Intelligence. 
[March 1, 
lowered to a horizontal pofition, and 
raifed again perpendicular; and it is 
curved again at the other end, to prevent 
the efcape of liguid when lowered to a ho- © 
rizontal pofition. Suppofe it then hori- 
zontal, and filled with water; tf it be 
raifed perpendicular, the water will run 
into the outer. cylinder, and, by its pref- 
fure againft the bottom of the inner one, 
will raife it up “with a very powerful 
force, which may be applicd to the works 
ing. of machinery ; when the tube is again 
lowered to a horizontal pofition, the water 
will run from the outer cylinder into it, 
and the inner one will be depreffed. As 
the weight of the tube, in its afcent and 
de(cent, can be balanced by a counteratt- 
ing weight, the power neccflary tovraife 
and lower the tube will be oniy what is 
fufficient toturna balance. The patentee 
has no doubt. that this engine may be 
made fo as to be eafily worked by one. 
man, and have the force of three harfes. 
He is, moreover, of opinion, fince the 
power neceflary. to produce the force will 
be but little, while the force produced 
will be very great, that the engine will 
continue in action by its own energy, ifa 
part of the force. produced be made to 
fupply the producing power, which can 
eafily be done by means of cog-wheels. » 
VARIETIES, Lirerary AND PHILOSOPHICAL, . 
Iacluding. Netices of Works in Hand, Domeftic and Foreign. 
©.* Authentic Communications for this Article will always be thank received. 
R. Cake, author of the Stranger in 
France, and other Works, having, 
during the Jaf fummer, vilited Denmark, 
Sweden, and Rufffa, and made a circuit of 
the Baltic, intends to favour the world 
with an Account of his Travels, accom- 
panied by various engravings irom his 
own drawings. 
The late Dr. SisrHorpez, Regtus 
Profeffor of Botany in the Univerfity of 
Oxford, havmg, with a zeal truly lao- 
dable, accomplifhed two voyages into 
Greece and the adjacent couniries, with 
the intent of inveitigating their natural 
hiftory, agriculture, and medicine, and 
thence brought ample ftores for his pur- 
pofe, direéted by bis will (left the refults 
of fo much labour and expence might be 
loft to the world by his death, which was 
occafioned by the fatigues and difficulties 
he had undergone), that, out of his manu- 
fcript journals, notes, and colleéti:n of 
plants, a Flora Graeca fhould be publith- 
ed, and ornamented with plates from the 
drawings executed under his own infpec- 
tion, by that admirable artift FERDINAND 
Bauer. The care of this undertaking bag 
been configned to the perfon of all others 
beft qualified for it, Dr. SmitH, Pref- 
dent of the Linnzan Society, who will 
bring ferward the work in ten volumes 
folio, each volume to contain two parts or 
fafciculi, with fifty plates, fo that the 
whole work will comprife a thoufand of 
thefe engravings. The price of the firf 
fafciculus will be ten guineas; and in pro- 
portion as the number of {ubfcribers in- 
creafe that of the fucceeding will be re- 
duced, from the operation of a fund left 
by Dr. Sibthorpe to aflift the publication, 
i a 
