Retrofped? of German Literature.—Mathematics, &e. 
mifchen .Bleichkunf, being a critical 
Differtation on the Art of Bleaching, ac- 
cording to the Principles of Chemittry. 
HerMstT£epr publifhed his ‘ Allge- 
meine Grundsatze der Bieichkuntt,’’ in 
which he teaches the general principles 
of bleaching ; and continued his-‘* Ma- 
gazin fiir Fa:ber, &c.”” or Magazine for 
Dyers,” Bleachers, and Callico-Printers. 
Ochers treated of variods proceffcs in 
dying; and no lefs than three of the art 
of making ink, a fubje& undoubtedly of 
great importance, confidering the immente 
fupply required for the multitudinous 
holt-of authors, fcribblers, and bask- 
makers belonging to the Germanic re-° 
public ‘of letters. 
OF the more general works on techne- 
logy, we fhall only notice FANG’s * Kuntt 
und Handwerks buch,” which is intended 
to be a complete technological encyclopz- 
dia, the two fir parts of. which contain 
inttruétions for coopers and organ-build- 
ers. Indeed, fuch publicity has, of late, 
been given, through the medium of the 
prefs, to every thing relating to the me- 
chanic arts, and technology in general, 
that receipts and fecrets, the knowlege of 
which was formerly confined toa few, 
may now be purchafed for a trifle, at al- 
mott every book-{tall. 
On commerce we do not find many pub- 
lications worth noticing. The Commer- 
cial Newlpaper, which was edited for 
many years at Gotha, by Hitpr, has 
_been fucceeded by the ** Allgemeines 
Hande!smagin’? — General Commercial 
Magazine, publifhed at Weimar. Buse, 
continued his ‘* Ganze der Handlung,” 
a work compriling the whole {cieace of 
commerce ; and SCHUMANN his §* Han- 
dels-Erdbefchreibung”’—or, Commercial 
Geography ; and his * Merkantilifche 
Literaturzeicung’—or, Mercantie Lite- 
rary Intelligencer. IkzNG has begun a 
general work on commerce, the firit part 
of which treats of banking ; and Meiss- 
NER, of Breflaw, has communicated _to 
the public his new-invented ‘* Deut {che 
Buchhaitung”’—Geiman Syftem of Book- 
keeping. ; 
MATHEMATICS, &c. 
As ufual, there appcared a confidera- 
ble number of elementary works on arith 
metic, pure mathematics, geometry, &c. 
which we donot think it neceffary'to no- 
tice; as likewife the tranflations of foreign 
workson mathematics, hydraulics, aftro- 
‘nomy, &c. which the diligent Germans 
have added to their own immenfe ftcck of 
literature. On mechanics, the long-eftab- 
lithed principles of which WHRNEBURC, 
637° 
in a Latin differtation, threatened entirely 
to overturn, there appeared an ‘original 
work, by Profeflor ScHuUTZ. Poppe 
continued his Encyklopadie des Mafchi- 
menwelens’’—Encyciopedia of Macai- 
nery; and the meritorious Hamburg So- 
ciety of Arts, Trades, &c. printed two 
Prize-diflertations on the conttra@icn of 
mils. WuEPBEKING, Row. chief direce 
tor of hydraulic ftruétures in the Auftrian 
dominions, who has lately propoled im- 
portant improvements in the harbour of 
Teicite and the Lagunas of Venice, gave 
a re-modelled edition of the late Mr. 
Buscu’s ‘ Watierbaakunfi”—or, Hy- 
drauiic Architeélure; and an ‘© Anlei- 
tung zuc Auffurung und Wiederherftel- 
lung und Erhaltung bequemer Landftral~ 
fen,” in which he lays down rales for the 
conftruction, repairing, and prefervation 
of convenient public highways. 
To the tricnds of aftronomy, the cele- 
brated Baron Von Zac#, drrestor of the 
obferyarory of Secberg, near Gotha, for. 
the maintenance of which the late lament- 
ed Duke of Gotha has bequeathed fuffi- 
cient funds, prefen'ed to the friends of 
aftrenomy ‘“* Afironomiiche Tafeln der 
inittlern geraden Aufiteigung der Sonne 
in Zeit, zur Verwandlunz der Sternzeit in 
mittlere Sonnenzeit” or, Aftronomical Ta- 
bles of the mean and dire&t Afcenfion of 
the Sun in Time, for the Purpofe of 
changing ftellar into mean folar Time 5 
and two Supplements tohis Solar Tables, 
and Catalogue of the Fixed Stars (frtk 
pudlithed in Latin, in 1792); being the 
fruits of his altronomical obfervations 
during fome years. Of his unwearied 
Jabaurs and ardent zea] for tae promotioa 
of aitronomical (cience, we (till continue 
to find new proots in his excellent perio- 
dical publication, eniitied ‘* Monatche 
Corre{pondenz fir Erd - und Himmels- 
kunde.”” Mr. Davip, of Prague, has 
continued his ‘* Ob:ervations,”” for. the 
purpole of determiniag the dongitude and 
latitude of the principal places in Bohe- 
mia. We likewife fee with pleafure a. 
new edition announced of the ** Allor- 
meine Betrachtengen Uber das Weltg:- 
bhaude’—or, General Ob{ervations on the 
Strugture of the Universe, by the cele. 
brated Bone, of Berlin. Several pub— 
lications likewife appeared, relative to 
the reformation of mathematical feience, 
fuggetied by tome of the new tes of me- 
taphyficians: SCHON, in particular, re- 
futed the Idealit WaGner’s objections 
apainft the mathematics, and fhewed the 
ablurdity of the changes propoled by 
him, — 
We 
