482 



Literary and Philofophical Intelligence. [Dec. I, 



Tares in a circus. It is fourteen feet and 

 ft half in length, and nine and a hidf in 

 brciuhh. M. Autauu has made a drnn- 

 ing of it, which is in the hands of the 

 ent^raver. He obfcives, tliat the tails of 

 the hoifes arc licre repreicntcd as dock- 

 ed in the Englilli fiifliion, and imagines 

 tliat this is the only inftance of the kind 

 that can be produced on antique haflb- 

 TcUevos. lie fnppofcs that this moiiu- 

 iiicnt niull have belonged to the houfe 

 <tf IJi^urius, fuperiiitendant of the pub- 

 lic iports in Lyons, and jiontifex inaxi- 

 mus of the temple of Auguftus, from 

 which his habitation could not have been 

 far dilUuit. It is well known that he 

 pave fports of this kiiul to all the corpo- 

 rations of the citv, who in gratitude en- 

 graved for him an infcription, which is 

 Itill extant, and contains thefe words: 

 Lvdns Circenfcs dcJit. 



M. Lebkun has invented a method of 

 coating the infide of truin[)Cts nith a 

 lac, which unites to l"inoothnef> tcmiity, 

 withoTit aiiy initiry to tl.e found of the 

 inftrument. By this means he prevents 

 tlie deleterious confequcuces arifing from 

 the oxides of copper bcin;; collected in 

 tlie inlides of trumpets, and thus inhaled 

 into the lunn;?. 



M. MoxGOt.riKH has invented a ma- 

 chine which he denominates a calori- 

 meler, or apparatus tor determining; the 

 (lei^rce of heat, and of the favinij tUat 

 may be made in tiie fuel einjilovcd. 

 This ajiparati-is will I'ervc for various pur- 

 potes, I'uch as to boil water at a fniail 

 expence. It is ufeful in domefric eco- 

 xiomy. To render its etTect complete, 

 the fnioke, or rather burnt air, fliould be 

 deprived as much as poftlble of its ca- 

 loric, ^^lnch ought to he entirely em- 

 ployed in anuincnting graduaUy tlic teni- 

 peratnre of the water which envelopes 

 the chimney. The air thus co:>led, be- 

 iui,- heavier than that of the atniofpherc, 

 rlorerni'nes the current of air in the fur- 

 nace, which am only be obtained in up- 

 right chinmies by iacriiicing a very cou- 

 fcderuble quantity of hetit. 



Di'. IIagkr has been appointed Pro- 

 feflbr of the (Jriental Languages in the 

 Unixerfity of Paviu, the hrft fciiool ol" 

 learning in Italy. 



M. Bojiroix, chief apothecary to the 

 French military hofpital at Genoa, lately 

 lent to M. Farmcnticr at Paris fomo 

 cotl'ee-cups of inicommoTi liL'htncfs and 

 fcoauty. Thev were glazed with a var- 

 uiiii which is l.c'rl in iircat tliiinntioii in 

 that coiuitry, and the compoutio.-i of 



which is kept a profmnd fccret. M, 

 Bompoix, at the earnell requell of M. 

 Parinentier, obtained a knowledce of 

 this lecrct from the artiticer at the ma- 

 nufattory, through the medium of one 

 of his pupils, and he has fucceedod in 

 making avamilh in every refpect equal 

 to that in (jutliion. It conhfts of lin- 

 feod oil, I'ihs. ; amber, lib.; litharge 

 in powder, minium in powder, and ce* 

 rufe in powder, each 5 oz. The hnfeed 

 oil mull be boiled in an unglazed earthen 

 velVel ; with the litharge, miiiiuui, and 

 cerule, inclofcd in .'i Inicn bag, fufpcnded 

 in It during thisproccfs, lb as not to come 

 in contait with the bottom of the veRel. 

 When the oil begins to turn brown, the 

 bag inult bo taken out ; a clo^e of gar- 

 lic, freed from the fkin, thrown into the 

 vcfiei, and the boiling continued. When 

 the garlic i.s dried av.av, another and 

 another mull be put in, to the amount 

 of fix or fevcii. In the mean time, the 

 amber Ihnuld be melted in another un- 

 glazed veffel, in the manner hereafter 

 tlefcribed ; and when the oil is futfici- 

 ently boilcfl, the fufed amber mull be 

 poured into it. In order to foftcu tiie 

 amber, and allift its fuliou, two ounces 

 (.'f liinc cd oil mull be added to it. %VhcH 

 the amber is wholly melted, itmuftbe add- 

 ed to the linfeed oil prc))ared as abo\c, 

 and the whole boiled for about the Ipare 

 of two minutes ; after which the Huid 

 ;nufl be ftrainerl through a coarfe cloth ; 

 and when colil, ("iit into a bottle well 

 corked, to ])rc^ent it from drying. The 

 amber ought to be lufed over a, very 

 brillc fire. The piece intended to be 

 varnillied mull be previoully well po- 

 lif/ied, and the varnilli .tppHcd in the 

 following manner : — ^"I'he varnilh m.ull be 

 mixed with a frnall qnuntity of tui-pen- 

 tine, and a little lamp black ; after which 

 one coat is to he h'.id on the piece by 

 meaas of a hair-pcucil ; wlicn this i» 

 dry, another mutt by laid ou in the fame 

 mamier, and the procc!^? repeated until 

 four coats have bfcen applied, taking 

 care that each be completely diy before 

 the ap])lication of the next; after which 

 the piece mnir, be put into a ftove, or 

 oven, and, when the drying is complet- 

 ed, poliihed with pumice and Tripoli 

 powder. The cups ought to be made of 

 hazel, alder, or cherry-tree, which are 

 ))referablc to other woods for this pui- 

 poCc, from their being porous when 

 peifectiv dry, and not liable to warp. 

 The cu| s, or other articles, mull be dried 

 ill an oven, and finely poliOied, prtvipu? 



