1804. ] 
32 grains of copper are equal to 25.6 
grains of metallic copper: of courfe the 
proportions for 200 grains of the ore will 
be, 
Sup Rie sigh #84: 
Antimony . . . 48.46 
1 EF Ree SRR DIRINE  Hte 3p-0 
TAD ous hiowihhwt nen eae 
Copper «<4. .0:) #2560 
.  e¥gga7a 
Lofs ah inieeh 4.30 
The lofs Mr. Hatchett afcribes: to the 
oxide of antimony and fulphate of lead ; 
but efpecially to the former, which has a 
great tendency to adhere to filters and 
glafs veffels. 
In connection with Mr. Hatchett’s pa- 
per, we muft obferve that the Count de 
Bournon has given a very ample defcrip- 
tion of this triple fulphuret; with ob- 
dervations upon the various modes of at- 
Lift of New Publications. 
239 
traction which influence the formation of 
mineral fubftances, and upon the different 
kinds of fulphuret of copper. 
According to the Count, the colour of 
this mincral is a dark grey, inclining to 
black: it has a brilliant luftreyand is very 
brittle. Its hardnefs is fuch that it eafily 
cuts calcareous foar, and when ftrongly 
rubbed on white paper, it leaves on it a 
faint black mark. It emits no fmell, and 
the powder retains the metallic luftre: in 
in this ftate if it be thrown on iron not 
quite red hot, it emits a phofphorefcent 
light, but without fmell. Irs fpecific 
gravity is 5765, which is {uperior to that 
of fulphuret of copper, or of antimony, 
but very inferior to that of fulphuret of 
lead. ‘The cryftals are not {mooth, but 
large and brilliant. ‘Io give a particular 
defcription of every thing that relates to 
the cryftalline forms of this fubftance is a 
main object of the Count de Bournon’s 
paper. 
LIST or NEW PUBLICATIONS tn AUGUST. 
a As the List of Neaw Publications, contained in the Monthly Magazine, is the 
ONLY COMPLETE LIST PUBLISHED, and confequently the only one 
that can be ufeful to the Public for purpofes of general reference 3 it is requested, 
that Authors and Publifbers will continue to communicate Notices of their Works 
(pof paid), and they will always be faithfully inferted FREE of EXPENCE. 
# 
ARTS, FINE 
Hints to young Praétitioners in the Study 
of Landfcape Painting. Illuftrated by Engrav- 
ings, intended to fhew the different Stages 
of the natural Tint. To which are added In- 
troduétions in the Art of painting on Vélvet, 
By J. W. Alfton, L. P. 8vo. ios. 6d. 
BIOGRAPHY. 
The Life of C. G. Lamoignon Malefherbes, 
formerly firft Prefident of the Court of Aids, 
Minifter of State, &c, Tranflated from the 
French, by Edward Mangin. 2s. 6. fewed. 
DRAMA. 
Foui Deeds will rife. A Mufical Drama, 
By S. J. Arnold. As performed at the 
Theatre Royal, Haymarket. 1s. 6d. 
EDUCATION. 
Grammars of the Englifh, French, Italian, 
Spanifh, German, Latin, Greek, Hebrew, 
with the Arabic, Chaldaic, and Syriac Lan- 
guages, each atone View. By George Bag- 
ley, Teacher of the Mathematics. 12s. bds. 
Tricot Anglicifed ; or, the Latin Syntax, 
as ufed in the late Univerfity of Paris, and 
adapted to the ufe of the Englifh Student. 
By G. Reynolds. is, Gd. 
i 
Canine Biography 3 or, Interefting Anece 
dotes of Dogs; interfperfed with Sketches 
from Natural Hiftory ; for the InftruGion of 
Youth. 2 vols. qs. 
The Book of Trades 5 or, Library of the 
ufeful Arts; intwo Parts. 6s. plain, ios. 
beautifully coloured. 
A Colleétion of Popular Stories, for the 
Nurfery ; from the French, Italian, and Old 
Englith Writers: wita numerous Plates. 
2 parts. §s. plain. Bi s Solna 
The Hiftory of Domeftic Quadrupeds; with 
entertaining Anecdotes. Adorned with Cutse 
23. 6d, . 
The Life of Carlo, the famous Dog of 
Drury-lane Theatre 3 with his Portrait, and 
other Copper-plates. 3s. 6d. 
Converfations, introducing poetry 5 chiefly 
on fubje&ts of Natural Hiftory, for the Ufe of 
Children and Young Perfons. By Charlotte 
Smith, 2 vols. 12mo. 
GEOGRAPHY, 
A General and Claffical Atlas, Part I, 
containing 16 Maps, with blank Duplicates 
of each; a Treatife on the Principles of Geos 
graphy, and Obfervations on the Method of 
Geographical Inftru¢tion. By tle Rev. Ed 
; _ Ward 
