6683 Retrofpe® of German LiteraturemNatural Philofophy and Chemifirye 
30 copper-plates, have appeared already, 
and the sth is in great forwardnefs. The 
letter-pre{s is publithed by a fon of Mr. 
Becker, to whom we are indebted like- 
wife is the above {p oe defeription of 
the highly picturefque valley rof Planen neat 
Drefden. The 16 ate pects, drawn by 
Klengel and Darnftadt, tranfport us, as 
it were by illufion, into that romantic 
gardenof nature. “Three naturalifts have, 
each in his line, given ap excellent view 
ef the’ minertlogy, botany, and entomo- 
Yogy of that vale, illufrated by coloured 
plates; and the editor has contributed to 
the entertainment of thofe readers that are 
deprived of the advantage of ocular in- 
fpection, by an ample defeription of the 
valley, igterwoven with many anecdotes 
of antient times, and infructive hints con- 
cerning landfcape-gardening. 
MATHEMATICS AND ASTRONOMY. 
«© Affronomifches Jahrbuch ftr das 
Jahr 1802, von BopE. Mit zwey Kup- 
fertafeln.”’ | Aftronomical Annals for 
3802; Berlin, 1799- pp. 260, 8vo: cnn- 
tains, befides a calculation of the chief 
periods of 1802, 23 valuable treatifes 
and obfervations by Profeffor Bliigel, 
D. Schroter, Mr. Seyffert at Drefden, 
Triefnecker at Vienna, Lambert, Eode, 
and others. This work, which was be- 
gun feveral years ago, may be confidered 
as the counterpart of ‘the juftiy celebrated 
Conxoiffance du Tems of the Fiench aftro- 
HOME!S. 
«¢ Monatliche Correfpondenz zur Be- 
forderung der Erd’- und Himmels-kunde, 
herausge egeben von. Fs VON -ZACH. ” 
Monthly “Correfpondence for the Improve- 
ment of Geography and Aftronomy. Sie 
tha, 1300. M. von Zach, the aftronomer 
of the Duke of Gotha, hae ceafed bag 
fithing the Gederapiiical Ephemerides. 
Tn this Journal Mr. Zach continues what 
he had begun in the Geegraphical Ephe- 
merides, which he has publithed for two 
years, according to another plan by which 
the reviews of new books and maps 
are move limited, and the extenfive 
and interefting correfpondence of Mr. 
Zach is communicated more at large. 
The Geogr aphical 3 Ephemerides are ftull 
continued under the fam, etitle by Meffrs. 
BERTUCH and GasPaRi, both refiding 
at Weimar; and they abound with in- 
formation. 
« Fehtbuch einer populiren Stern- 
kunde, nach dem gegenw arngen Zuftande 
der Wiftenfchaft, von J. H. V ORG. (eras 
feffor der Mathem. zu Jena.’ Compen 
dium of popular Affronomy, according 
to the prefent State of this Scie ence, Wei; 
war, 1799) pp.458, 8vo. This work 
was undertaken under the aufpices of M. 
von Zach, a circumftance which cannot 
fail to prepoffefs every perfon in its fa~ 
vor. It is intended for, and is ufeful to, 
fiudents, and to perfous who ftudy aftro- 
nomy by themfelyes. But it would have 
been very deficient, if Mr. GoLpBAcH, 
of Gctha, had not etched at the fame time 
a complete and ‘very accurate feries of 
aftronomical maps, in which the moft re- 
cent difcoveries have been taken notice of, 
and the configurations of the coatte Hatinns 
exhibited in white fpots on a black ground. 
The whole has been publithed adtier the 
title, ‘‘ Newefter Himmels- Atlas, von C. F. 
GoLDBACH,” ina very fuperior manner, 
with a pre by M. von Zacu. ‘Thisis 
one of the finett tt moft ufeful publications 
of German Literature in the year 1799. 
NATURAL PHILOSOPHY AND CHE- 
MISTRY. 
SCHERER’s Chemical Journal, and 
CRELL’s Chemical Annals, are fill con- 
tinued, and are accomplifhing themfelves 
in mutual rivalfhip. But Scherer’s Jour= 
nal has always been the fuperior, efpecially 
in point of well-digefted literature. 
« Handbuch ae Theoretifchen und 
Praktifchen Chemie, entworfen von D. 
G6TTLiING, Profeffor zu Jena.” Ma- 
nual of Theoretic and Pra€tical Chemiftry, 
11 parts, pp. 1089. Jena 1799. Mr. 
Gotling is weil known by his Journal of 
Chemiftry, and an Almanack, in which a 
yearly retrofpeét of the proprefs and new 
inventions of chemiftry are detailed in a: 
very able manner. The firft volume of 
this work 1s deftined to colle& all chemical 
fubftances into a fyftematic arrangement, 
and to mark out their diftin@ive charac- 
ters; the fecond, or pra€tical part, to con- 
fider their experimental application. The 
whole is fuch as may be expefted from a 
man, who during feveral years has treated 
of this fcience in public leétures, and en- 
larged it by feveral new obfervations and 
experiments. 
G. Cur, LICHTENBERG’s Verthei- 
digung des Hygrometers und der De Liic’ 
{chen Theorie vom Regen. Herausge- 
geben von Lupw. CHR. “LICHTEN-= 
BERG, S. G. Legations- Rath, und _ 
FRIEDR. Krirs, Prof. am Gothaifchen 
Gymnafum. Garten, 1800, pp. 228. 
Sve. Lichtenberg’s Defence of the Hy- 
grometer, and of De Luc’s Theary of Rain 
This treatife was occafioned by a book of 
Zylius, to which the prize was adj udged 
by the Academy at Berlin in 1- 7955 ‘aa IR 
which De Liuc’s theory concerning rain,, 
and the whole hygrometry adopted tll 
now, was attacked. It has not been coms. 
pleted by the author himilf;. howev ery, 
DING 
