No coin nor oath required. For personal study only.
t,hc hydrocnrhoii (ZV), idciiticiil with n compoiiiid iilrendy ol)tiiincd by 11 siniilnr proccss froiii cliolcstnnonc. 110 Dr. S. I<. ..\chin said that for it long time piist it, hiis IJCCll dilficult, or iiiipossil)lc, to distinguish bctwcii stcrolic kctoncs with 11 CO ;it 3 i i n d iiny stcrol (lcrivnti+c with ii single witcr-nt trtictiiig gro1111 i i t or nciir posit ion 6. Thc conversion of tlic C1-lOli groiili :it. 3 into CO cniiscs thc wholc niolrciile to tilt over; why this I I ~I ] ) ~E I ~S is still a mystery. Dr. Askew hiis, however, found t.liiit inisctl films containing cliolcst erol, wliicli stniitls upriglit, l i n w nll the iiiolcculcs standing upriglit, or ncnrly so, if thc ot,licr constitucnt of tlic inistiire is n kctoiiic tlcriwtivc with CO :it. 3 ; hit. cholcstcrc~l docs not nficct the tilt of inolcculcs wit,li O H or CO :it 6, t,hc reason being ~) ~C S l l l i l : i ~J ~~
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production on iiiaiiy siilistiiiicrs, iiotiihly ccllulosc, phenols, and glycerin, the siipply of \vliich for siicli piirposes vould undoul)tctlly IJC severely rcstric\*tetl if not entirely stopped.
099 66 p.p.in for 10 dnys dcstroycd the power of geriniiintion. He doubted very much whcthcr tlic conccntrntions of SO, conccrncd in tlic present case or occurring in cities would hnvc nn insccticidnl effect. The average hunian bcing WRS supposcd to be able to srnell concentrations of SO, down to 3
stitutes-a large part of the atmosphere. Chapman and Milne, however, have recently challenged this view and take the ground that helium is the predominating ingredient at the high levels, such as ISO kilometres. Those who desire to know about the present development of the important science of the