Mr. Whitmore’s, and Mr. Hazledine’s Patents. 
@uantity of mundic and pyrites, contain- 
ing fulphur, copper or iron, zinc and 
arfenic; with thefe materials a common 
fulphur kiln is to be charged, and a gentle 
heat to be applied: part of the fulphur, 
and the zinc and arfenic, in the ftate of 
oxide, will rife together into the receiver 
in the form of a bright yellow fublimate, 
which conftitutes the bafis of the new 
paint: the remainder, confifting of iron 
or copper, with a portion of fulphur, is 
to-be wafhed in warm water, and the 
water fet to evaporate by the heat of the 
fun, or ina trough upon the kiln: when 
the liquor is thus brought to a fufficient 
degree of concentration, cryftals will be 
depofited of green or blue vitriol. 
It may be remarked, that the merit 
of invention in this patent is very {mall : 
confifting merely in the mixture in due 
proportion of the materials: the procefs 
ef roafting differs in nothing from that at 
prefent pra¢tifed in Anglefea and other 
parts of the kingdom; and the mode of 
procuring the vitriol is now, and has 
long been, in ufe in Germany. 
Mr.WHITMORE’s,FOR IMPROVED Ma- 
CHINES OR ENGINES FOR WEIGH- 
ING WaGGONs, &c. 
A patent was granted, in January, to 
Mr. WILLIAM WHITMORE, of Bir- 
mingham, engineer, for improvements in 
machines or engines for weighing wag- 
gons, &c. 
The chief defe€&t in machines of this 
kind is their being fubje&t toruft, and to 
51 
being out of order on account of great 
friction. To remedy this, Mr. Wuit- 
MORE propofes that the fulcrums and 
bearings fhould be incdofed in boxes made 
of caft-iron, wood, or brafs, and filled 
with oil, fo that the edges of the ful- 
crums fhould be completely immerfed. By 
this means the edges are preferved fharp, 
and the machine is very little liable te 
inaccuracy. 
Mr. HAZLEBINE’S, FOR AN IMPROVE- 
MENT IN ROLLING JRON, CopP- 
- PER,. LEAD, &c. INTO PLATES OR 
SHEETS. 
In July, 1798, a patent was granted 
to Mr. HazLepDINE, of Salop, iron- 
founder, for an improvement in rolling 
iron, copper, lead, &c. into-plates or 
fheets. 
Inftead of a fingle pair of rollers, Mr. 
HAZLEDINE propofes that three or four 
pairs fhould be eregted adjoining to each 
other, with guards of metal to deliver the 
lead, &c. from one roller to the next; 
the cylinders of each pair of rollers are to 
be placed at different proportional dif- 
tanees, fo as that a bar of metal being 
flatted in its paflage through the firtt 
pair, may be ftill further expanded in 
going through the fecond, and fo on fill 
it is delivered out of the laft, of the re- 
quifite thinnefs. Thus by a fingle opera- 
tion, a bar of copper may be reduced to 
a fheet; which in the common way re- 
quires fevera] repeated operations, 

ACCOUNT OF DISEASES IN LONDON, 
From the oth of Fune to the 20th of Fuly. 
ACUTE DISEASES. 
No. of Cafes. 
PERIPNEUMONIA NO LEAL, = 
Inflammatory Sore Throat - 
Typhus Mitior - hee - 
Fphemera = - - 
Meafles 
pa DAY w 
CHRONIC DISEASES, 
Dyfpnea - = 
Cough e S ts 
Cough and Dyfpnea - = 
Hoartenefs a ~ 2 
Hezmoptyfis - = z 
Pulmonary Confumption - 
Pleurodyne 2 ps 2 
Hydrothorax - - 
Aicites pa s 
Anafarca - bs 
Ophthalmia - : 
Fluor albus ae yt - 
Menorrhagia - _- 
Abortus ‘ 
Amenorrhea s As ‘s 
i] 
MYO vwPwbd ww Yran 
~ Vomitus - mh 
Cephalalgia > 
Chlorofis - - 
Gaftrodynia - - - 
Enterodynia = - - 
Dyfpepfia - = 
Colica Pionum © 2 _ 
Worms ~ tees Hi 
Procidentia Vaginz > - 
Diarrhea “ a i 
Hemorrhois - * = 
Dyfuria - . > a 
Nephralgia = = e 
Iéterus - < 
Scrophula - = es 
Hypochondriafis - = 
Hyfteria - - 
Palpitatio . s 
Convulfio ° ~ Ss 
Epilepfy - - - 
Hemiplegia - a 
Paralyfis ~ 
‘Tremor +4 ® - 
QDR Ve vVwwrwP HWNWRNKNEWNHHWNYH 
G2 ; Vertig 
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