4^« 



NATURE 



[{• ;.;,;. LAkV I, I912 



..I ll'- !:iv 



,.| I.. Ih. 



P.lll'l" III! 



th.- |.hllial\l- 



( 



lll> .Uill.wl - 



(.1 ill. I wo 

 -. ri.^ : ih. 

 Mr. I. \' 



■ lil •! ii. |li ' p.ll ill- Hi' .I^UI .li.l' . 



■I :i iiiinilni ul till- ( I im|i( jumcI-^ '■•. 

 rv^lailiii'- pinpiilii^ li;i\.' Iiii-ii • \.iiniiieU by 

 llark'T. wlui ha-- ( mil rilniiiil Id the paper 

 <pm|)l' ' '111 drawiiiL;-^ in ill.- (as., nf rii^lit dl llir 



Jiunliti. . I !).■ (Kcun'.in .■ dl ili.' iwd Nari.-ti."- i-- 



usuallv (i. t. riiiiii.tl maiiilx i>\ |. nip. ralin ••, and llu- aulhuiv 

 .ar.- lliii'ldj. iiuliii.il Id ii:;a!il ih.-in a-- iiuTilv pdh- 

 niorphir. li: llii- ili.'\ ai;]-. .' with lli.' rdiK lu^idii.^ arri\r(l 

 al l>\ I'iulti and Ahali in i.inrncr Id tin- siih^lilulfd 

 phthaliniid. .-, whirh f\hil)il a similar dinidrphisni. J.at«T 

 work. i'< dii th.' i)lilhaliinid.s liavr pn-f.ir.il id r.;;ai-d tli.- 

 tWd varirti. > as iscjnicfii . Th.. .■\ id.iu .- in la\.un dl lliis 

 vii-w is h. r, \,i\ >irdnj;. h.-caiis.- cm. dl lii. \aii<ii's of 

 thr imid. ~ :- rdlduil.s^ anil ihr nlh.-r \illdw, and it i- 

 illiuubt iinpussibli- Id l..li.>. tl'ai ih,- mIIhw idKiur niukl 

 be produced by m\\ 1 r. niaisliallinj4 ih.- idldur- 



'■•ss "lolecules. In th. ...-. .-, ih. Indra/id.s, iju- dilf.-r- 

 : colour is l.ss >tril;in^, hul, as ih.- authdrs ])diiU 

 v<u;. ilii- |)os<ibiliiy dt' isoiiii-risni is dii.' ihal imisi not be 

 overlooked. 



Il h.is Idiii; hirii known that di-plli dl wat.-r .m in.M-jr. d 

 .nid. -. ■- . ^...,.11^ !-,,|nr in (li'ii-rminiiiL; spi.-tl rcsulis, and 

 '■'''■ :,;))('./ lor January 26 Ljiv's pidinin- 



' li. .•■ ...i.i iiii. siiL^aiidiis (in this suhj.it. l-'dlluwing 

 ■■\p. linirnis wliirh ha\.- hi. n mad.- in ihis idimlr\- on the 

 .Mapliii and dn thr Ski-lnidiii. nn-.i-ui . d inil.-s, th,- t'lrsi- 

 mentioned havini;- a d^pth of .j5 h-.i -.wvA \\\<- s.-roiul a 

 depth of 240 f.i I, till- L'niti.d Siat.s Navy aiithoriiies have 

 run trials with a halil'-hi]) (ihc Mirhis^dn) and with two 

 torpedo-boat d.r-ird\irs nh. l-in.ssrr and th.- l\rid) over 

 their three m.-asurnl distai;i.s. 1 ],,. r.-Mdis shdw rlearlv 

 the increase in pow. r dn.- lo slialldw de])ih. ;ind ii is prob- 

 able that the two shallowi-r coursr-s will h. iliM.-nd.d in 

 future for high-speed trials. ,i,-w nuu-s.-s l»ini; 1,-iid down. 



The first presidential address in th.- twi-lv..- \ ears' history 

 of the Society of .Model and l-lxperinn ntal lai-in.-.rs was 

 <lelivered by Mi-. P.-nival Marshall on Jamiarv jj. the 

 subject beini; " Mod. 1 l-ai-im. ..rini; : Past, Pris. nt. and 

 Future." That models have played a very ini[Hirtant part 

 in the development of real engineering practie. is well 

 known to those acquainted with the work of Newcomen, 

 Watt, Murdock, Nasmyth, and other early pioneers. 

 Probably the most strikinj^ example of service rendered 

 by a model is to be found in \\att"s invention of the 

 separate condenser, devised while repairir ~ dni.Mi 



model belonging to Glasgow University, ^s times 



the art of model-making has been practised continuously, 

 not only by those professionally engaged, but also by 

 others whose tastes have led them to seek recreation in 

 mechanical pursuits. Exhibitions have been very instru- 



NO. 2205, VOL. 88] 



iiuif 



ns; th- 

 rising; 

 ~i iinu! 



iiidii 



raiH 

 fur 



i' 1-inaking, and tin 

 Vnith K^nsingtOi 



leal intluciicc, !- •!] a- an <-diirationil 



ofing int»»r«'«!t i- mod. 1 . .Mod. Is an 



<.n^trate the merit] 



1 nr»' invaluable il 



Models (« 



one firof 



turiiin}^ out some 250^ 



thousand metn!-turniil| 



s by t^ 



i he presi- 



dcls repn 



! up in 1 



b' v. ry valuable in the education ..f 



1, and would be a source of rofer'-r . - 



ihdsi- with in\-.-nti\.- mind-. 



A siX'iM) (-diiii.n of 

 .\rithmf-l ir :■ "d ' j. oni.-'." 

 M.lhu.-n 

 d.-( iinaU I 



1. -Millis's " Technii d 

 11 j)ublished by Mr--:- 

 dition has been 



ore vulj:jnr fra. 



sindii-d, and niii.-v on factors, multip' 

 dllici wdik ha\e l)e'n added. 



A si\i;\iii idiiidn, r«-vis..(l bv p,-,,f. j- . \\". . 

 l-.R.s.. dl •■ A jun of Practical ZuoJ. 



Ill' l.'i' I'rol. .\. M. ,iiall and the late I). 



Iliirsi, has been published by Messrs. Smith, Eid«rr 

 ( d. In this edition a new chapter, dealing with the ch 

 has ii,, n added to meet the needs of those who attei 

 I 1. 111. iiiai\ .111 bryology in their junior course. The \y. 

 of th.- Vdluni. is los. 6d. 



Mkssrs. Constable .and Co., Ltd., will commence 

 publication, in April next, of a new quarterly scien; 

 re\i.-w to he entitled Bedrock, " a quarterly review 

 scii-niitie thouj^ht." The editorial committee consists 

 Sir Bryan Donkin, Prof. E. U. Poulton. F.R.S., P 

 II. II. Turner, F.R.S., and Mr. G. .\rchdall Reid. ; 

 aetiiii.,^ editor will be Mr. II. B. Grylls. The first nuni 

 will contain the followinj^ amont;st othr-r contributions 

 Value of a logic of method, Prof. J. Wclton : i... 

 researches on alcoholism, G. Arciidall K d P...: , 

 Bergson as interpreters of evolution, Pn 

 social and sexual evolution, the hermit o; . ...^^v.^ . 

 current research; the interaction of passing ship 

 A. H. Gibson. 



OUR ASTRONOMICAL COIAM.X 



Feb. I. 



3- 

 6. 



II. 



14- 



»5- 



23- 



24- 



25- 



26. 



- Ft>k Fkhkl AKV : — 



conjunction with t: 



TNOMlC.\ 



Ih. 3^ 



(.Neptiuu 5 ji) .-s. 1. 

 8h. Cm. .Saturn at i]uadrattire to the .Sun. 

 1711.54111. M.i.nv in conjunction witli 



( Mercury ■ 

 9'i- -ini. i conjunction with th.. 



(Jupiter 4 ^7 .\. . 

 loh. 30111. \i-iuis in conjunction with the M 



(X'enus 5 ; . "\ 

 9li- 2im. ! conjunction with the Mi :: 



( Uranus 4 3 , ,', . . 

 20h. aSni. .^aturn in conjunction with tlie ^! 



(Saturn 4° 23 >■ *■ 

 9h. 29ni W-nus in conjunction with I'ranus (V'enus 



o°39'.\.-. 

 iSh. 32m. M.irs in conjunction with the M 



(Mars 1° 43' S. . 

 7h. om. Venus in the descending node. 

 loh. Sm. Xeptvme in conjunction with the Mi 



(Neptune 5 46' S.). 



