4U 



Ketv Paients lately enrolled. 



[Jan. I, 



•' As the memferane ofthe fenedra coch- 

 Itx is expofed to the air Cuiitained within 

 the cavity of the tymparnim, it appears 

 adapted to receive fuch founds as pafs 

 Through the membrana tympani, without 

 exciting confonint motions in the I'eries 

 of oflicula auditus. 



" Experiment. My head being laid on 

 a table, with the meatus auditorius exter- 

 nus perpendicular to the horizon, my 

 friend Mr. Wm. Nicholfon pulled the 

 tragus towards the cheek, and dropped 

 from a linall vial, water, a'' the tenr.pe'a- 

 ture of my body into the meatus. The 

 firft drop produced a feiifation like the re^ 

 port ot a diftant cannon, and the fame ef- 

 fefl fucceeded each following drop, until 

 the cavity was filled. In this txperimenr, 

 the vibrations of the membrani tympani 

 niuft have been impaiied, if not wh(j||y 

 dtrtroyed, by the cjntaft anJ prtflTure <.f 

 the water ; yet the motic ns of the whole 

 nieinbrane, froTi the blovv of each drop 

 of wHtci. affVcttd (he air contained in the 

 tympanum fufHciently to proouce a I'cnfi- 

 ble imprtfTion. 



'• That fomefhing'like this occurs in 

 nsany kinds of founds is more ihsn proba- 

 ble 5 and as the cochlea confifts of two 

 hollow half cone-, winding fpivally and 

 uniting at th ir spices, it fjllo*s that the 

 founds sfFefting eithrr c re terminating 

 in the vcft.bulum, or that which forms the 

 femftra cochleae, mult each pafs fiom the 

 wide to the narrow end ; and the lenfion 

 ifiliepaits, in either cafe, will neceffa- 

 rily aid the imprefPion." 



The Prefiddnt has communicated ft cm 

 Mr. Pears, the " Cafe cf a full grown 

 woman in whom the Oraria were defici- 

 ent ;" from which thi're appears good 

 giound for concluding that the growth of 



the uterus depends entirely upon that of 

 the ovaria : fince the liiifoiy of the cafe, 

 in Connection with the difTedlion, (hoi'S 

 that an innperfeft ftate of tjie ovaria is 

 not only attended with an abfence of all 

 the chara£fer» belonging to the female 

 after puberty, but that the uterus itfelf, 

 though perfeftly formed, is checked in its 

 growth for want of due ftrufture of thofs 

 parts, 



Mr. H. C. Standert has laid before 

 the Society " Adefcription of Malforma- 

 tion in the Heart of an Infant," which 

 lived ten days, though there was but one 

 auricle into wh.ch the ptilmonary veins 

 and venae cavae entered in their ordinary di- 

 rtflions. The pulmonny ariery was wholly 

 deficient : the hody of the heart pcffcfltd 

 but one ventricle, ieparated from the au- 

 ricle by tendinotts valves, and opening in- 

 to the aorta. The auricle was alfofingle, 

 having a narrow mufcular band which' 

 crcffed the oftium venofum in the plice of 

 the leptum. The .toi la lent off an artery, 

 from the lituation of the dutilus arteriofus, 

 which divided itfelf into two branches, 

 fuuplyi g each mal'i of the lungs. The 

 pulmonary veins were lour in number ; 

 but neither the area of thefe veins, nor 

 that of the veff.l which a^fed as the pul- 

 monarv arttry, txcetded half the common 

 dimenfions. The prcfcnt cafe is extraordi- 

 nary, rdembling in organization the am- 

 phinious animals, rather than the mam- 

 malia. It is therefore wonderful that an 

 infant fliould have exifted To long under 

 fuch circuraftances, and the faff mult be 

 deemed important in phyfiology, as the 

 dependence of life on relpiiation, and the 

 changes produced in the vafcular fyftem, 

 are lo imperfefliy underftocd. 



NEW PATENTS LATELY ENROLLED. 



MR. DANIEL nESORMEAUX, and MR. 

 SAMUEL HUTCHINGS'S, (BARKING, 



ESSEX) for Impro-iiementsin the manu- 

 j'aRuriHs, of Wax, Spermaceti, and 

 TaJkiu Candles. 



THIS inventinn w?s probably Aig- 

 gtfted by the prirciple of the Ar- 

 gaiid lamp; it confifts principally in mak- 

 ing the cotton wick hollow inftead of 

 cf I'e, as it is at prefent c-nffrucled. The 

 patentees fuggtif two modes of perfoim- 

 ing this part of the optration, one of 

 which is to draw the threads of cotton 

 through the holes of a certain ciicuLir in- 



ftrument, and keeping them tight in that 

 pohticn till they are fmeared over with a 

 refinous and inflammable fubftance, after 

 which the candles are to be formed either 

 by cipoing, or in movik's, accaiding to 

 the uiual modes. Tl-.e fccond method is 

 to form the wick into a ftraight fubll:^nce, 

 by weaving oroiherwife ; it is then to be 

 cut into (trips of the proper length ard 

 b:e.idth ; thefe firips are to be turned 

 lound a wire, where they are to be kept 

 eit! er by tying or Come other meihcd till, 

 they are covered with tallow, or wax, .or. 

 fpennaceti, or a ccmpofuion of two. or 



more 



