May i8, 191 i] 



NATURE 



\97 



:i_;nL> d'nised to ascertain how far this factor might be 



■'•r if f'thal to bactfiria ir, insKrsteHar space. A growth 



■' Bacillus pyocyancus rai--(l frtm: a thin film of a ciiUur.- 



iinadi- in peptone waterj spread on glass and kept dried 



M' vacuo U)\.- four months. The vacuum was produced by 



'^'•- I (111 - Dcwar's method (a bulb of powdered charcoal 



■ by liquid air, after exhaustion by pump) ; after 



hii vacuum was maintained by sealing off the 



Light was excluded throughout. The bacillus when 



! ih.- air (light excluded) dies within three months. 



ha\'iour of this bacillus in vacuo is exceptional. Its 



nance of vitality corresponds with that of o-riain 



iiid'M- similar conditions. (2) Microscopic sections of 



<al(uli from the human subject. 



I !, .V. ('. Rothschild. — Model of Xcnopsylla clicopis. 



tropical plague flea. Mr. F. EiiocI;. — Photomicro- 



.rai)hs of new species of Britisli iMymaridcC. The inseci> 



unprised in tfie subfamily MynKiridic are ovivorous in 



-ir habile, laying tlicir v-gg- in tlio--- of various Homo- 



, , ,').l ( ',>l,.,,ptiTa. Hitherto <>nl\- thirty-live species 



111' photoinicrographs are part of the 



c:i>'-> 

 occur 



b- 



ti. 



hiindn-d arid fif"^" 



1, .-»ll.Tt-<l u- 



II . /)'. f.cisin,, 



fantile spleni<- :r 



in Tunis, ltiil\ 



I protozoon — Li,.... ,,,.,., 



1)V C. AicoUe and other 



species (many as 

 • g the past thirty-five 

 — A parasite foimd in 

 t a-f.-s of this disease, 

 alalia, Portugal, and 

 iCijantuni, Nicolle — has 

 s. It resembles closch' 



of kala az; 



ai ■ Oriental -1 



'I ; i< e\ti-i-ni>- 



I' aiicaii littoral. It 



b with ihr' fatal di 



' ■ jj.,, I .-, ivhich oix'urs :■: 

 Gp-cian Archipelago. Th' 

 in rlog--. and it is |)ro1.)abb 

 th.- du- ;,, lb.- child bv tlT :)r 

 Avehury. I- .h'.S. (1) 'Moli: 1- 

 an uvvl. ( _• ) lil\ I I'dii of ii. . 

 fl_\' from Hor!e-o (Orni:!:-; 

 tip- of Ih.- j.-alh-ts of .1 I 



Lcishmania donovani, Laveran — 



— Lcish^nania tropicuDi. Wright. 



fatal, and appears widr>pr(a(l in 



!>■ been pro\ . d lo 



lildren known a- 



ill' islands of th.- 



n.;\.- also br-cai found 



, ■ iran-niilti'd from 



aw.Ti. The Lord 



I 'alii;o) iniilal ing 



bu-1. ij,) l>iiM.-|-- 



i miinicl^inu; 'b. 



■ini-rging liann ili.- 



midribs of tli'- j.atbi- 



■■.-11 ri.pn-Maii.-d. Mr. 



'ill-: laii int; Alrieaii 



'-./>'.>,, Mr. C. ,1. 



;i/.. . /•;. ^■. jo.,rpi,. - 



< r .-e; i\-.- r.'.s'anlibmria 



rllir-- and mollis. 



I )-uioi ie ;_;ro\\t lis 



■oiaiis ol organic 



niiiifral ■-' .■(! oi" 



ni, .aiiO . 

 'I iniltiii, 

 b',..a- <' 

 I \,\ I'r. 

 ► I I.if.-.' 

 .1 inoiil.a 



Cnnhil.l: 



•ll.- 



irowtbs 



(11 S|,.r. 



show colour pha>_-s observed in the New York Aquarium ; 

 th,--.' ri-,h-- ai-- lon-iantly changing their colour and mark- 

 ing- : thi- i- ai eoniplished i)\' the expansion and contrac- 

 tion i.>f chroniaiophor'.'s, or pigm>Mit c-^lls. 



Mr. .4. ir. C'laydcn. — |i| Footprint- from the Permian 

 sandstones at Pohimore, n>-voii. Nunierou- fooiprinrs 

 have been discovered during th.- la-c l\\\> i-ar- i;^, ii - i' ' 

 stones mapped in the Survey map> a- Low.-r >airl-;i>,i' - 

 They are of two types. Neither can be exactly maicli ■ 1 

 from any of th.- known localities at which footprint- o' 

 Permian age hav-- b.-i'n found, either in (ir.n: '• 

 America, or Germany. They bear, hou. \ r, 

 resemblance to those obtained at ("orncoclcl.- M 

 Penrith, though differing in d<'iail. M>. R. If. /;' 

 Skeleton of Ortiithodesnnis latiJcu.\\ a pt.-rodari\ 1 

 W.-alden shales of Atherfield. Isle of Wight.' M,. i'.^ 

 Taylor. — Remains of fossil reptilres from the Tri.i--i. -1-' 

 stone of^ Lossi'Miiouih. I-",lgin. Prof. W. M. /• 

 F.R.S. — Roman portraits, llr-t c.-iuurv a.m. I 

 traits are paint. al with cobmr.-.i wax upon thin p.i.i. .- ■ 

 cedar. On -ouv a fi-.-b coai of parafiin has been now 

 added for -auri:\. Tb.-\ w. r.- pl.ic.l v\ -r th.- faces of th'- 

 mumnii.-- and 'lanibi,;''! down rouni! -Iv- ---li;--. ! '• 

 from til.- -am-- i.ni'-nr\. at ilawara. i\i;\ p: , 1- 

 the National < i;lll.-i'\-. a sil.- now .-\bau-i -i in :' 

 School of .\|-eb;eolog\ in l\g\ p! . />'■■ b.ia ;/;-(;; i 

 Photographs of -in-fac'- was.-. /'». /'";.■ (>. I .'n: ^^ .•■ ■■ 

 Mmmrain photograpli-. 



THE IROy :\Xn STEFJ. IX.'^TITl'TE. 



'j'lll-; .innuai -■ ii.-ral -ai'-.-iin- of Uv Iron and Steel 

 Institut.j opened on .Ma_\ n under !■ or. ■-;<!. n.v of 

 his Grace the Duke of Devonshire. I 

 held at the Institution of Civil Engine.' 

 ijold medal for 191 1 was presented to Prol. 1; 

 Chateher, of Paris, who attended for this purpo 

 ("arnegb- giild m.-ilal was award. -d to Mi ' ' '■' 

 lia- eoni.itiil'-.l r-'-.-arcb'-- «in lir- w-ai- 

 r''-i-i anc- ■ to eru-lling. ('arii'-ga- i---.- ir. :: 



i-„.,-i, award'-. 1 :.. M.---r-. W, M. ' er i;i ■ iin, 



(,. lla'1-ion'-. of Hirniingbani, K, M k--n.-} ■ !•> 



I .S.A., ari'l t.. Di.'irich Rohl, of l-'r.-ib.-i -. 

 M'---r-. |. N'-wton bri.-nd, of Darlingion, nid T, ~- 

 of Sli.-in.-l'l, :ia\'- iia.i additional -ran;. ' ■ t' , 



,-na.bI" ili'-ir r---"are:i'-- ;.> b.- .-xl.-nd--'! 



Si\r.'i-n j)ap.-r- in all w.-r.- i)r.--'f ' ' '"^ 



principal point- d.-all with in i ■ 

 below. 



1),-. f. 1-:. Si. -a. I ...inriluin-d -..n; iii'- "'id ^-. 



lip of blow-boj.-- an. I ra\i!i'-- in -1- - I'"' --v'-b-n. 



advaiiC'-.l -bow- tba;, if ill'- blo\\--boi' - 

 -uiitailan'-oti-. /.'■. tind'-r llf -kin and 

 10 lb'- aiiiD-pb'-r--. and th.' li.-alinu; 

 -iirri.-i'-nllv iii^^b. -a\ looo' C. and abo\ 

 \V'-ld up compl.'t'-l\ on b.-ing i-.>1!.mI or t..-^ 

 '..main no forr-ign inm:"r. h :- .l.a'.'im 

 '-avii i.'S can b'- -" r'a.lil} \' ■ M ■!, I ■' 'mn 



pip.-- ni ing.>l- ar.- oji- 

 and tb.- .-mi-:.-- '..-.'. 



n in -I'l 



\al ion: 



}[r. can !)-• bir.-.'.l bv pr..--ur.' ii 

 ,,l,.,,r I r,..ra.-'K '".-,'■ nnr I) .-f ii will 



