66 
infituted at Birmingham, for the purpofe 
of improving its. members in natural phi- 
lofophy, by lecture, experiment, and dif- 
cuffion. A fuitable apparatus is to be 
provided at the expence of the members, 
each of whom is to leéture, in his turn, 
upon fome fubjec&t in natural philofo- 
phy. 
The Literary and Philofophical Society 
at Newcaftle have it in contemplation to 
eftablith a Le&turefhip on the fubjeét of 
Watural_and Experimental Philofonhy. A 
aper on the fubje&t, drawn up by Mr. T. 
IGGs, one of the members, has been 
printed and circulated by the Society. 
Mr. W. CLose has made a great va- 
riety of experiments, in order to “afcertain 
the beft method of making Ink, which 
fhall not be difcharged by time or chemi- 
cal proceffes : as the refult of his inqui- 
ries, he recommends for black ink-—** Oil 
of lavender 200 grains, copal in powder 
25 grains, lamp black from two and a haif 
to three grains; with ‘the affiftance of a 
gentle heat diffolve the copal in the oi] of 
lavender in a fmall glafs phial, and then 
m:x the lamp-black with the folution upon 
a marble flab or other fmooth furface.” 
The compofition is to be put ina bottle, 
and kept from the air. If, after a few 
hours, it be found too thick, it muft be 
diluted with a little ot! of lavender, oi] of 
turpentine, or alcohel. For red ink— 
s¢ Take of ol of lavender 129 grains, co- 
palin powder 17 grains, red fulpburet of 
mercury 60 grains.” Both thefe compo- 
fitions poffefs a permanent colour: the oil 
-of lavender being difhpated with a gentle 
heat, the colour is left on the paper fur- 
rounded with the copal, a fubfiance inio- 
-luble in water, fpirits, acids, or alkaline 
folutions. A manufcript, written with 
them, may therefore be expoted to the 
procefs commoniy ufed for reftoring the 
‘colour of printed bocks, without the fimal- 
‘left. injury to the writing 3 and, in this 
manner, ail interpolation s with common 
«ink may. be removed. 
\ From a communication made by Mr. a 
“Brown, of Markle, near Haddington, to 
the Saciety of Arts, for which he received 
a premium of twenty guineas, it appears 
—z. That wheat may be fown with ad- 
“vantage in the fpring months, till the 
| 
roiddle of March, if the weather be thea 
d:y, the land in good condition, and the 
<f{-cceeding fummer. moderately warm; 
2 That, under thefe circumftances, the 
p riod of harveft is not retarded above ten 
days, by the late fowing, efpecially in 
tavourable fealons ; 3. That the grain pro- 
Literary and Philofopbical Intelligence. 
{Aug. 1, 
duced from fpring-crops of wheat is equally 
good in quality, as that fown in the au-- 
tumn and winter months. 
Mr. W. BuLLock, of Portland- adc 
Scho, has invented a new and improved 
draw-back lock fer houfe-doors. The 
improvement confilts in latching the door, . 
by letting the bolt fhoot into the flaple 
immediat ely when the door clofes, and not 
before ; and the reliever works fo very‘ 
eafy, that the door is made faft with the 
twenty-fourth part of the force required 
by locks upon the eommon conttruétion. 
Mr. DacLey has in great forwardnefs 
a Selection of Antique Gems, to comprife 
the moft admired and beautiful Specimens 
of the Greek Sculptors, and chiefly fuch 
as have not been made public. It will 
alfo contain the greateft variety of fubjects 
and heads illuftrative of the Heathen My- 
thology, and the Fabulous Hiftory of the 
Ancients ; tegether with the animals, 
fymbols, and fragments found on Ancient 
Gems. Particulars and fpecimens may 
be feen at Meflrs Murray and Highly’s, 
2, Fleet-ftreet ; Mr. Taffie’s, Leicefter- 
{quare; and at Mr. Dagley’s, Kenfing- 
ton-terrace. 
A coirect and enlarged edition of the 
Works of D’Anville 1s in preparation at 
Paris, under the able direétion of the 
Citizens Barbiér du Boccage and Demanne. - 
This edition will be elegantly printed in 
quarto, with a large folio atlas. The 
text will be comprifed in fix volumes, 
of from fix to feven hundred pages. 
each; and the atlas will contain fixty-two 
chaits. 
The Rev. Mr. Scraaes, of Bucking- 
ham, will foon publifh 2 new Work on 
Englifh Compofition. 
Dr. STANGER iS about to publifh a a 
Work on the Neceflity and Means of fup- 
preffing Ccntagion im the Méetrepolis. 
Few Perfons are fo fully aware as they 
ought to be of the importance of this 
fubject. 
Mr. R. Duppa and Mr. BH. Howarp 
intend fpeedily to publith a feleétion of 
outlines from the moft celebrated Antique 
Gems, with remarks critical and expla. 
_ matory. The engraved outlines will be 
of an enlarged fize, accompanied with 
letter-prefs, ccntamaele the beft infor- 
maticn which can be eolleéted of the Gem 
itlelf, and its relation to Clafiie Hiftory 
and Mythology. But as a principal objeét 
of the work is to point out the charac- 
teriflic beauties of that branch of Sculp- 
ture, the remarks will be particularly 
bs onagiani to that end, and the feleétion 
wal 
