1190

STONE, ARTIFICIAL.

I shall conclude this article with a description of the cheap still which is comj®

employed by the chemists in Berlin for rectifying alcohol, a

iobV

the

18 the ash-pit;Are-place; c, c, thefitjes, which go spi-rally round the sides

°f the cucurbit d; 6

tne capital, made ofblock tin, and fur-nished with a brassedge, which Sts tight

a corresponding

edge on the mouth ofd; f,f the slantingPipes of the capital;'g> the oval refrigera-tory, made of copper;

the water-gaug eglass tube; i, a stop-eock for emptying the

vessel; k, ditto for- ‘ — A

vrssci , ■ . * e r,

drawing off the hot water from the surface ; 1, tube for. the supply of cold ^ 0 ,double cylinder of tin is placed in the refrigeratory, of which the outer 0 > gn e,stands upon three feet, and is furnished with a discharge pipe n. The ’^war® 10 , 0 , which is open above, receives cold water through the pipe p, and lets pe-

water flow off through the short tube q into the refrigeratory. In the narro Wj passtween the two cylinders, the vapors proceeding from the capital are condense > reC ei'' eoff in the liquid state through n. The refrigeratory is made oval, in order 0 „e,two condensers alongside of each other in the line of the longer axis; thougand that in the middle, is represented in the figure.

STOCKING MANUFACTURE. See Hosiery. to the h 10 **

STONE is earthy matter, condensed into so hard a state as to yield onJ J was tnof a hammer, and therefore well adapted to the purposes of building. e£ |jg e es, l* 1 ®care of the ancients to provide strong and durable materials for their public of 1*hut for the desolating hands of modern barbarians, in peace and in Gained P<£temples and other public monuments of Greece and of Rome would have C ont^ ^tSt, -feet at the present day, uninjured by the elements during 2000 years. A®*isthis respect, of the works of modern architects, especially in Great i>r sca rcelf *

humiliating to those who boast so loudly of social advancement; for the™ he« c .public building of recent date, which will be in existence one thousand j B wh

Many of the most splendid works of modern architecture are hastening to da ,e ®

may be justly called the very infancy of their existence, if compared w* ,villi

those erected in ancient Italy, Greece, and Egypt . This is remarkably w hieh he? jthree bridges of London , Westminster, and Blackfriars; the foundations s tone ' n,erl t e dto perish most visibly in the very lifetime of their constructors. Every # sat t > ra ,jj,for a durable edifice, ought to he tested as to its durability', by immersio crf st ® e

solution of sulphate of soda, and exposure during some days to the air- . (s sU bst 8zation which ensues in its interior, will cause the same disintegration ^

which frost would occasion in a series of years. , nl . c hitecH> re > tfis

STONE, ARTIFICIAL, for statuary and other decorations 01 Fe ilner. W sbeen made for several years with singular success at Berlin , by ' | aS tic I® 8 aI11 lmaterials are nearly the same with those of English pottery; an cu jj ar jn fo r,n ’ j,jsfashioned either in moulds or by hand. His kilns, which are pc ^ repr es81 ’ j, jseconomical in fuel, deserve to be generally known. Figs - 1969 an jo70, vv ' 1 ‘ re tlround kiln : fin. 1069 hpinv nn nhlinne spclinn in the line A, B, 1-, / . „—-P c. 0°

the

The hearth i\. „ r ar ‘: h J Js filled whh ’ The inner circular space c, —

a few fp P , „ Wf> f »«*> the figures to be baked, set upon brick supports-

m ‘ and there are steps before the door >the second »*> ■. ’* 1 '**1 the foor s

also chaTZT “. the «l» S ho,e? > A P> in the hearth over the above fl^

distribution of th’ ?’ 9 ’ m ( he sides atS , ,nl ° c °ntact with the various articles. Thout,on of the heat; antJ enclosed by thin waits, r, to promote the equable

ese are Placed right over the first fire-flues e. i