1800. | 
dried. .This compound material being 
paffed through a lawn fieve, is then mixed 
with ground flint in different proportions, 
according to the nature of the ware, and 
manufaétured. The proportions which 
the patentees recommend in moft cafes, 
are from fix to ten parts of the compound 
material with one of flint. | 
The peculiar advantages which arife 
from this new material are, that from its 
greater ductility it may be made into 
very large pieces of ware with lefs diffi- 
eulty than ufual; that it requires only 
the moderate heat in baking, which is 
ufed for the queen’s or cream-coloured 
ware; and that being found upon the ipot, 
it faves a great expence of carriage. 
Obfervations.—It is well known, that 
the Staffordfhire potteries poflefs in them- 
elves only the advantages (which are very 
great indeed) of plenty of coal, and of 
' Literary and Philofophical Intelligence. 
-the white ware, 
oe 
¢ 
367 
convenient water-carriage; but that the, 
clays with which the pottery diftriéts 
abounds, are in general. fo abundant in 
iron, that though many of them appear . 
white before burning, they all turn brown 
in the kiln, owing to the calcination of the 
iron, and therefore are only fitted for the 
faggars and other coarfer earthen ware. 
The materials for the finer, and edpecially 
are moftly imported 
coaft-ways from Cornwail and Devyon- 
fhire, and confift of the growax, a fine 
micaceous clay, and the chert, a filiceous 
ftone. ‘The material introduced by the 
patentee appears to {upply in fome degree 
the latter article, but requires a {mall ad- 
dition of flint to give the ware a greater 
firmnefs, and by being found upon the 
fpot will sive an additional local advan- 
tage to the Staffordihire potteries. 

VARIETIES, Literary snp PHILosopHIcAL. 
Including Notices of Works in Hand, Domeftic and Foreign. 
%,.% Authentic Communications for this Article will always be thankfully received. 
<a 
R. GARNETT, the profeffor of 
}. Natural Philofophy and Chemuifiry 
“in the Royal Inftitution, has for fome years 
been employed in collecting materials for 
a Hiftory of Chemiftry, which he is pre- 
paring for publication with as much. ex- 
pedition as his other important avocations 
will allow. 
We are informed that Dr. PriEsTLEY, 
who has long been engaged in a feries of 
chemical and philofophical experiments, 
in order to put the new chemical theory to 
a decifive teft, is collecting them into a 
volume, which will thortly be laid before 
the public. The mature deductions of 
fuch a mind will doubtlefs be received 
with attention and deference by all real 
philofophers, how much foever they may 
differ from the prevailing opinions: 
Dr.BarpsLeEy, of Manchefter, ts about 
to publifh Critical Remarks on Mr. SHE- 
Ripan’s Tragedy of ‘* Pizarro,’ with 
incidental Obfervatiens on the Subject of 
that Drama. 
+ Mr. Pratt has a 5th volume of his 
Gleanings, forming the 2¢ of his Glean- 
ings in England, inthe prefs. Likewife 
a new edition of the 4th volume, forming 
the r{ft volume of his Travels in England. 
And about the fame time will appear a 
xevifed edition, being theFi/zh, of the three 
volumes, called ‘* Gleanings,” through 
Wales, Holland, and Wefiphalia; where 
in will be included the 6th impreffion of | 
‘¢ Humanity,’ a Poem. Fn the hitherto. 
unpublifhed volume (the sth), will appear 
a new edition, being the 7th, of the Poem 
of Sympathy. : 
Dr. Mavor will fpeedily publifh an 
abridgment of Plutarch’s Lives at a mo- 
derate price, adapted to the ufe of Englith 
fchools. The_moft remarkable lives only 
will be retained, and thefe will be pruned — 
of their fuperfluous and extraneous matter. 
‘The want of fuch a f{chool volume has 
Jong been felt in all our principal femina- 
ries, where Plutarch would always have 
been gladly introduced, if the fize and 
price had not proved an obftacle. 
The Condu&tors of the ANNuaL NE» 
CROLOGY have recently circulated the 
following fet of Queries athong the re- 
latives of eminent perfons recently de- 
ceafed. We give place to them here, 
becaufe many of the readers of the 
Monthly Magazine may allo have it in 
their power to an{wer them refpecting cha- 
racters, who may deferve a place in that 
work. ait 
--y. Where and when was bora, 
{pecifying the place, day, month, and year? 
2. Was he celebrated for any extraordinary 
attainments; or, did he render himfelf re- 
markable by any peculiarities ? 
30, BS. 
