1302. ] Premiums 
the most correct analysis of any mineral produc- 
tion of Great Britain, hitherto either unexamined 
er not examined with accuracy; the gold medal. 
The analysis and sufficient specimens to be pro- 
duced to the Society on or before the first Tues- 
day in January, 1803, 
86. PREPARATION OF SULPHURIC ACID 
FROM SULPHUR WITHOUT “THE USE OF ANY 
niTRic SALT. To the person who shall pre- 
pare the largest quantity (not less than one ton) 
of sulphuric acid from sulphur, without any 
nitric salt, of a specific gravity, not inferior to 
the hest sulphuric acid of commerce; the gold 
medal, or fifty guineas. Certficates that not less 
than the above quantity of such an acid has been 
prepared, together with a sample, to be produced 
to the Society on or before the first Tuesday in 
January, 1803. 
87, PREPARATION OF ANY ALKALINE OR 
EARTHY ‘NITRATE. To the person who shall 
prepare, in Great Britain, the largest quantity, 
not Jess than one hundred weight, of any salt of 
nitric acid, with either earths or alkalies, by a 
metijod superior to those hitherto practised ; the 
gold medal, or one hundred guineas. Cerlificates 
of the above quantity having ‘been prepared, and 
3 sample of not less than 28/b. to be produced to 
the Society on ar before the last Tuesday in Ja- 
nuary, 1803. 
88, Fine Bar-1tron. To the person, in 
Great Britain, who shall make the greatest quan- 
tity of bar-iron, noi less than ten tons, with coak, 
from coak-pigs, equal in quality to the best iron 
imported from Sweden or Russia, and as fit for 
converting into steel; the gold medal, or fifty 
guineas, Samples, not less than one hundred 
weight, with certificates that the whole quantity 
is of equal quality, to be produced to the Society 
on or before the first Tuesday in January, 1803, 
89, PresERvING [Ron FRoM Rust. To the 
person who shall invent and discover to the So- 
ciety a cheap composition, superior to any now 
in use, which shall effectually preserve wrought 
iron from rust, the gold medal, or fifty guineas. 
A full description of the method of preparing 
the composition, with certzficates that it has 
stood at least two years unimpared, being ex- 
posed to the atmosphere during the whole time, 
to be produced to the Society, “with ten pounds 
weight of the composition, on or before the first 
Tuesday in January, 1803. 
90. ReFrininc Biock-Tin. To the person 
who shall discover to the Society the best me- 
thod of purifying or refining block-tin, so as to 
render it fit for the finest purposes to which grain- 
tin is now applied, and not higher in price; the 
_gold medal, or fifty guineas. Ceriéficates that 
not less than three tons have been refined or pu- 
rified, with a full detail of the process,.and a 
quantity, not less than one hundred weight, of 
the tin so refined, to be produced to the Society 
on or before the frst Tuesday in January, 1803. 
91. Guazinc EARTHEN-WARE WITHOUT 
Leap. To the person who shall discover to the 
Society the cheapest, safest, most durable, and 
most easily-fusible, composition, St for the 
an Polite Arts. 
579 - 
purpose of glazing the ordinary kinds of earthen-\ 
ware, without any preparation of lead, and supe- 
rior to any hitherto in use; the gold. medal, or 
thirty guineas. Specimens af the ware so glazed, 
with proper certificates of its having succeeded, 
and a sample of the materials made use of, to be 
produced to the Society on or before the first 
Tuesday in February, 1803. ‘ 
92. Rerrninc Copper FROM THE ORE, To 
the person who shall discover to the Society the 
best method of separating, purifying, and refin- 
ing copper from the ore, s0 as to render it fit 
for the finest purposes to which fine copper is 
now applied, and by a process superior to any 
hitherto known or in use, and not higher in 
price ; the gold medal, or filty guineas. Cert7fi- 
cates that not less than three tons have been so 
prepared or refined, and a quantity not less than 
one hundred weight of the copper so refined, to 
be produced to the Society on or before the first 
Tuesday in February, 1803. 
93, MINERALO-1CAL MABOFENGLAND AND 
Waves. To the person who shall complete and 
publish an accurate mineralogical map of England 
and Wales, ona scake of not less than ten miles to 
an inch, containing an account of the situation of 
the different mines therein, and describing the 
kinds of minerals thence produced; the gold 
medal, or fifty guineas. Cerigficates of the accu~ 
racy of such map, together with the map, to be 
produced to the Society on or before the first 
Tuesday in February, 1804, The map to re- 
main the property of the Society. 
g4. MINERALOGICAL Map OF IRELAND, 
The same premium is offered for a mineralogical 
map of Ireland on similar conditions. 
95. MINERALOGICAL Map oF SCOTLAND. 
The same preinium is offered for a mineralogical 
map of Scotland on similar conditions. - 
96. NaturRAL History. To the author 
who shall publish, in the year 1802, the natural 
history of any county in England or Wales; the 
gold medal, or fifty guineas. It is required that 
the several natural productions, whether animal, 
vegetable, or mineral, peculiar to the county, or 
found theréin, be carefully and specifically ar= 
ranged and described, in ofder that the public 
may be enabled to judge what arts or manufac- 
tures are most likely to succeed in such county. 
The work to be delivered te the Society on or 
before the last Tuesday in Jimuary, 1803, 
— oy 
PREMIUMS IN POLITE ARTS, 
97. Honorary PREMIUMS FOR DRAWING, 
BY Nopitity.« For the best drawing, of any 
kind, made with water.colours, crayons, chalk, 
black lead, pen, Indian Ink, or bister, by young 
gentlemen under the age of twenty-one, sons or 
grandsons of peers, or peeresses in their own 
right, of Great Britain ar Ireland, to be pro- 
duced on or before the first Tuesday in March, 
1803 ; the honorary medal of the Society in 
gold. 
98, The same in siiver for the next in merit, 
99, 100, The same premiums will be given, on 
