1860.] 
feffor of thefe fciences in the univerfity of 
Pett, is now publifhing in conjunétion 
with, and under the patronage of a Bohe- 
mian nobleman, Count WALDSTEIN, two 
excellent works, which will greatly add 
to our knowledge of Hungary in general, 
and in particular be highly interetling to 
the botanift. In the botanical work, at 
New Patents lately Enrolled. 
093 
leat zoo-——300 new fpecies of plants will 
appear, and not afew entirely new genera. 
rofeffor KrraiBeL istor fome years, dur- 
ing feveral months, annually to make, at 
the expence of :he Hungarian government, 
a pbyfico-botanical tour througn Hun-_ 
gary. 

NEW PATENTS LATELY ENROLLED. 
eee 
MR. WILKINS FOR A GUM. 
7 R. SrEPHEN WILKINS, merchant, 
of Worcetter, for a gum to be ufed, 
in calico-printing, dated November 24. 
His deicription of the invention is as 
follows : 
To half a ton weight of {craps of pelts, 
or &ins, or picces of rabbit ikins, or fheep’s 
trotters, add three hundred and fifty gal- 
lons of water, and boil them together for 
feven or eight hours, or until it becomes 
a ftrong fize. Then draw it off, and when 
cold weigh it. Waim it again, and to 
every hundred weight add four gallons of 
the (trongeft {weet wort that can be made 
from malt, or twenty pounds weight of 
fugar, and, when incorporated, take it 
off and put it into a cafk for ule. 
This fubftitute for gum-may be ufed by 
calico printersin mixing up nearly all kinds 
of colours. By ufing a fixth part only of 
gum with it, it will improve the gum, and 
be a faving of 200 per cent ; but without 
gum, of 400 per cent. It will alfo im- 
prove and preferve the pafte fo much ufed 
by printers. 

MESS. WILLIAM8'S FOR BOOK-BINDING. 
JOHN and JosePpH WILLIAMs, ftati- 
oners in Holywell-fireet, for a newly in- 
vented and improved method of book- 
binding which produces freedom in the 
epening. Dated November 4. 
This invention confifts of the applica- 
tion ofa back of a femicircular, femioval, 
or any other curved form, turned a little 
at the edges, made of iron, Geel, copper, 
brafs, tin, or amy other metal, ivory, 
bone, wood, veljum, paper, leather, or 
any other material capable of retaining a 
firm fituation. This ftiff back being put 
on the book before bound, in fuch manner 
as juft to cover, but not to prefs, fe 
edges of the paper, will, when the book is 
opened, prevent it from {preading on either 
fide, and caule it to rife in any part which 
’ is opened to’a ftraight and level furface. 
The method adopted by Meffrs. Willi- 
ams in binding thefe books, is to forward 
the paper in the ufual manner, cut, cloth- 
ed, and boarded (or half boarded) and 
the frm back to be fattened at the fides, 
through holes, by vellum, or fecured by 
enclofing it in vellum, or forrel patted 
down, or é:awn through -he boards, 
- Thefe improved account books are fold 
at common prices. 

MR. BELL’S FOR A POCKET Fa8sTENING, 
James BELL, of Chancery-lane, taylor, 
for a pocket taftening to prevent the lofs 
of property. Dated November 4, 1799- 
This invention confifts in the applicas 
tion of a light and delicate fteel frame and 
foring to the opening of the pocket. The 
frame opens and clofes by means of hinges, 
and 1s faftened,, when fhut, by means of a 
{pring and f{crew. 

MR. MURDOCK’S FOR STEAM ENGINES» 
Mr. WiLL1aM MURDOCK, engineer, 
of Redruth, Cornwall, for a method of 
conftructing {team engines. Dated Au- 
gult 29, 1799. 
Mr. Murdock’s firft improvement is 
to bore the metallic cylinders and pumps 
of fteam engines by means of an endlefs 
fkrew worked in a tooth wheel. This, 
he conceives, produces a more equable 
and fteady motion than any of the me- 
thods now in ufe. 
Secondly, he fimplifies the confruétion 
of the fteam veffel and fteam cafe in en= 
gines conftructed on Mr. Watt’s princi- 
ple, by cafting the fteam cafe of one entire 
cylinder, to which the cover and bottom . 
of the working cylinder are attached. 
Within this is placed the working cylin. 
der, or fteam veffel, which is fitted tight 
at both ends: or, he cafts the cylinder and 
fteam cafe in one piece, of a fuitable thick. 
nefs, and bores a cylindric inverttice be- 
tween the fteam-cafe and fteam-veflc], leav- 
ing the two cylinders attached at one end, 
aud he clofes the other by a ring of metal. 
Fhirdly, he fimplifies the conftruction 
of the fteam-valves, or regulators and 
working gear in Mr. Watt’a double en- 
gine 
