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'. N. IIii~.tIy 1)oititctl otlt t h t (111 tlic rciictiotis wIiicIi were cliiitiied to be itiitiiitctl by prcssitre coiiltl be brought nliout it1 prcseticc of tilkiili cirtiilysts, iiiid tic suggested t l i i i t tlic gliiss tnbcs, etiiploycd to cotitxiti tlic rcnctniit.s, lind supplictl iilkiili under the po\vcrful itifluct~ce of the prcssiirc. Hc itiqiiircd wlictlier m y of' tlicse rciictiotis liittl I m t i ol)servetl to take p l i i t ~: in silicii or stiiitilcss steel vessels.
It. Tiiylor siiitl tliiit cspcrittictits of Fii\vcott, Clil)soii iititl l'crriti Iirivc iticliciitcd tliiit it1 the eiiscs cxiitiiitietl tlic iiccclcrntittg efkct of pressure wis due to itti iticrciisc in the collisioti fiictor of tlic Arretiliitis eqiiiit,ioti, sitice tlic h i i t of :ictiv:itioti \v:is eitlicr titi-c~liiitigctl or iticrcnsctl. Such cll'cct could not initiiitc it cliettlicitl rciictioti, titid it is coticlldctl t,liiit iti t h four ciiscs tiotctl iti t,ltc present p p c r prcssiiro Iiiis lowered tlic Iiciits of iictiviitioti : i t i d so beli:i~ctl 11s i i mtiilyst,, wliicli resctiil)l:iticn ttiiiy Iiavc Imiritig 011 tlic rctiiiirks of Dr. IItirtly.
๐ SIMILAR VOLUMES
## THE ROYAL SOCIETY At. II nicc!iiig liclcl on Xovcmlm 10 :I piipcr ou .' (::iscow Conil)ustioxi nt 1 [igh 1'rcssnrcs, l'iirts SlV, SV, nncl S\'l " \ras rcritl l.)y \\riIlii~ni A. J h i c l).Sc., F,JLS., I). 31. Xcwitt, Il.Sc., nntl I). 1'. A. 'l'o~rncnd, DSc. Prof. Ikmc siiid : \*. 'I'lic pipers
## Royal Society. PRESIDEST'S I\I)DRESS. (Chcmicnl News, 1016, 112, 291-292.) At thc Aniiivcrsnry Nccting of thc Roynl Society, hcld on Korciiibcr 3Otli, Sir Williani %!rookcs said:-Wc mcct to-day in circunlstanccs of unparalleled -gravity. I nm SIWC ivu arc all ilccply conscious of tlic inipcrnli