DES 
hour to expel from even a {mall mafs - fubftance all the 
water which it will part with at this he: 
. The heat of an Argand lamp may te conlidered as a 
convenient and tolerably uniform mean between the tem- 
perature of boiling water, and a low red heat. It may be 
reforted to om very many occations ani great advantage, as 
there are numerous faline earths and aaa fubftances 
The defic arent produced in 
this way is ufually very compleat and conveniently rapid, ef- 
pecially when the fubitance is contained in a cup of platina 
or other me = 
a e may mention the heat of low bi a which is 
jut viible iy day-light , and this is in molt cafes the utmoft 
heat employed for mere deficcation ; though fe are fome 
fubftances which will oa water till they have been ex- 
pofed to a ftrong red-hea 
*  Desiccation, ia Geology, i ig a term that has been ufed by 
geologifts to exprefs the drying or hardening of the lee 
of the earth, particularly of fuch ftrata as prefent 
» Tifts, and cav 
ecale the eens 
are numerous, of a traverfing : a vein that was pre- 
vioufly quite filled with fpar and ore, and the fucceffive 
heavings of the ftrata, noticed under our article psa 
have ground the ain eS into furrows, and covered them 
ee. 
and ad extraneous 
and alluvial matters to great ae in the 
ATUM, from fers, vi ue is ee to 
alan defirable i pe eaene a rt or fcience, as yet 
unattained hus a defderat um with the black{mith, 
to reutee iron fafble, by gentle heat, and yet preferve it 
hard enough for ordinary ufes ; with the gla(s-man and 
looking-glafs-maker, to render glafs malleable; with the 
clock-maker, to bring pendulums to be ufeful where there 
are irregular motions ; with the brafier and copperfmith, to 
make malleable folder; with the it heed to build vef- 
fels that will fail under aah with the 
manageable inftruments for conveying ein SS) 
tom of the fea fufficient for (piscine. and the burning of 
lights ; with the affay-mafter, to melt or copel ores, or me- 
tals, immediately without the ufe of bellows or furnaces 
and with the carvers and joiners, to fafhion wood in moulds 
like piafter of Paris, or burnt alabafter, &c. And though, 
as Mr. rah obferves, the poner) of thefe ripe ties 
at firft to be gueffed, for how man 
be found, by means of chemical and philofophical refearches, 
properly dire&ed. 
f a proper number of perfons eu qualified for making 
experiments, and improving from them, would fet ab 
wany of the defiderata in he art probably fu 
DESIGN, from defipno, I mark out, the se or repre- 
DES 
peat of ew order, Sa diftribution, and conftrues 
» book, bui r 
In bui Bing we ufe the term eee oa when by de- 
fign is only meant the plan 
drawn on paper. Orthogr 
m the And {cenogra- 
phy, when both front and ade are gee in * perfnedtive, See 
each article. 
aoe » in Mufie, is an Plan, eee zeal intentioney 
of acompofition. It is not enough to uce good paf- 
fages in the melody, ae c accompany peu with good 
harmony; the whole muft arife out of, and have fome con- 
nexion with, the fubje€t. In all Haydn’s beit produtions, 
where his invention teems inexhauttible, ar hearer is never 
allowed to forget the text; which, amidft all the variety 
and contraft of pathos, grace, sabi and playfulnefs of the 
Pepe melody, is hear » by m ns of 
oo) 
r between thefe tw 
extremes is the ieon by which we ar eftimate the judge 
The difficul- 
quick. the 
t 
aptivating va 
In 
fign “appears. 
maturer years he gave way to his feeling, patil i in 
his vocal mufic, which was little known, except at Vienna, 
till after his death. But in his operas, both ee and 
comic, his defigns are fupported with fo much fimplicity, 
grace, and elegance, and fed with fuch a conttant flow of 
ideas, as if he had trufted to chance for arrangement 
ESIGN; Painting, and 
Sculpture, is chiefly ufed 
work, including the invention ny » compofiti ion, and arra 
ent o b che 
3 fo phat cially a pic 
h the defign 
om 
= 
i?) 
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