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Show [M . P.] 502 Oo'jefiz'om to tlzz': Theory mszerca'. it is iuch fafer to exceed in the one way, than to be deficient in the 0 er. .‘n to the points on the {everal buildings at Purfleet, the only faul: in them, (if there was any fault) feems to have been their not being high and frequent mouglv. Thercis more perhaps to be {aid on thefc fubjeé‘ts, but thcf: pages are the property of Dr. Franklinl 13.] P. S. There is a difliculty however to be anfwered here with refpeé‘t to the arlmflivc influence of [7/11sz conduftors. For it may be thought that if a blunt body acts fo powerfully upon its natural charge, it ought for the fame reafon to be propertimmfly inrui/z'ng to a FOREMIN Marga-Let then the letters A B C, in the order in taliieh they fland, refpeé‘tively reprefcnt the blunt body, the natural charge, and the foreign charge. The foreign charge is here allowed to be iirongly attratled by the blunt body A ; but fince the natural charge 3 intervenes between them, the repellency of that natural charge acts from a nmm- pol't than the attraftion of A ; and as its quantity and repellcncy is in the firii inflance proportioned (in fonie meafure) to the attraftion of A, and it has the advantage of poiition; the invitation to a foreign charge is thus confiderably checked in the blunt body.--As to the point, it: merit lies, not in its attraction of the fluid, but in its giving little oppofition to its pafl‘age, whether Oéjeiz'z'am to £sz Tbeary mfwered. 503 '9? in each ' ' ' ' ' igrgggehtiar th theref , ounh m a ore d muff for : th: . :irfieealiléhguignient li919lnied fs and Of ‘lF'id (rifIn ra like mannetic if feverz‘ lgzzgdnfgisduu g‘t ors fmali t at aSb!0 efo be infenii 4‘1" F ble *mg: Zheidpcudllbéxt (tihe Me of each other; thev will 1:13:11 Alim- (owin to th e .6 round them, than when in‘ their {Eparateyiti t"E tionedgabovee~ amp/3;. of each other's {pare lateral influences; as his? otherwife 0(1)t 1ich {hews‘that conduc'iors with flag/e points 0buildin 5 End) tshp acedflzfiamtly afima'er 1-, are the fafeit forbuirWhich litter { e molt powerful for our elefirical machines I fluid that is cal? (of the machines) the necefiity for Miami". th: their m l . loo eflted, affords a farther and fironger reafon agi' I} u tip reity; fince if by any accident, points are placedg‘ihna fituation wher ' .e the y I d 0 7I fl 7‘ 26511.) l ‘ ! the Hind, i the y W111 A 111 I general be at - . , .1, {villiifii'iimi‘iflffiiap‘ifi‘tr" =19 r9199"" 1" 9911133: as m the charges . fan .' _ _ in r. ran lin's leti , 1:9:3 m fiflaTh arge, which is here affirmed concerning a Miami ogne fever PP mu" 1 ",1, an not-ff [ eiefare pieces of metal with teeth like a [11741 [$6111 on. o proper as long {lender points of metal. E91 I a accounts it be going in or coming out of it. But farther: It may be thought that if a fuperior quantity of natural charge furrounds blunt bodies, compared with pointed ones; Mr. Canton's [Jib-[mils ought to a'ifw-evrr ilje déjh'EIMA-But I an{wer that the fnpcrior charge in blunt bodiEs cannot afi‘cft the balls by mtraflz'ng them ; For attraction afts only between bodies that are difproportionatelycharged; but as the balls and blunt body have equally been communicatingwith the nafs of fluid in the earth, the affair of competition and proportion has been previoully fcttlcd between them, and they cannot now differ. Neither can the charge ofthe blunt body repel the balls; For fince other bodiea drauing proportionable {hares of fluid from the earth fur-round or in the prefent {late of things are conneéitcd with the balls; thofe other bodies muii lofe their chargcs, before the balls can be driven back upon them; but thofe charges are held up in the bodies by the common mafs of fluid in the earth, which is the fame force that holds up the fluid in the blunt body itfelf, (that would otherwife become difperfed, down to acertain proportion.) ~ However though indie: containing the natural charge, are thus feen not affected by its different difiributions, yet it may happen Other-wife with the/11:1! itfelf that confiitutes this charge: For fuppofe two [111ml bodies, communicating with the earth, to be brought near each other; the fluid in each body repelling that in the oppofite, and the attraction In Suppoflfz'om |