3«o 



NATUHL 



[M 



1911 



l.Kl 



fxprrssrd l>y hts corri-si 

 to return, or to corral 

 man intended ft>< 



No taken oi o 



M nil: l-.DilOK. 

 fiself responsible for 



The Thomson and Peltier Effects. 



Compulsory Latin Diagnoses for Fossil Plants. 



.11 :. 



ho ar»; «< 



to •■Itl'l 

 lictli f.-ith' : 



A ever, th.i 



■ rglUIKMlth 



ir to uutv. 



(liai> 

 a\v.(\ 

 pl.it- 

 pail 



;.iii_;;ul.(i --iriji w.i- 

 ]).irl ilion, .mil .1 ii 



I rni <'l th. 



inorandum has b».-».-n >eju ha% 



avoiilinjj the general us*: of 



, aiiJ, i\jiil\\fT, of rprognisirijj as valid 



! in til'- futiii<- wliiili ■ATf not published 



■cholni. Sw. 



fihrf williin ill'- ,-i|>''riiir.- in iln- U|)|)'i- |>.in ni i (1) " 1 do iint ; 



ill.' pai-liliuii, A hoii/unlal lii-i ,,1 ( aidKoai <!, in ili. d. s, • 'i,; i. .- 



shown linM'il in ill'' tii;ui'-. \\a- li\'-il in ih' 



Uj)|)'T o>rl< 1'' .1 I>:iir '>i r.xU, a'l'l till. -'I in-i.l-- 



111'- lul"- ji: ■ ■ " 



-'■ildr-sliap' 



ill'- paflitiuM ji;-i ii'-iou iin- \.i:i'- !■' ■■ i ■ ,r.'. s,i,-l 



a clianii' 1 iov ill'- curi'-ni ol air Iroin ini|)aiiii-(l 



wanii ;i> ill' riiol >i(li- of ill'- paililion. 1 1 h.- l,,llf,- 



ill .iranr.- I1. iw. n th'- i(1l;''s of tli'- \an.- .and 1 both li 



llii- o[>''ninL; '.\a-> ahmil i-^ nun., and llv- , indi, .1;. 



anf<ul;n- in"\'ni'nl of \-.an'- \\;is ri-siri< i.d 1)\ of i-i --l.tl' a 



Stops to al'oui ii)'\ 'I'll'- motion of ili.- v.ni'- ; f,,' ■ of sian.i 



w.ls oti-.ii-\'d li\ I'-ll'-rl in;.; a li'-ani of li^lii ^ ' : ' ." 



from till- mirror )ii on 10 a >i a!'- ,it a 'li-iani'- ': ' 



ot '^o ( ni. ( ,1 . . . ., 



'Ill' paril; i.'iv '1 ml)'-. io;^.ih.-r wiili ili'- Prof. 1-.. \\ . lv-r.'\ , 



SUsp'iid'd \an'-, ron>!ilul.-s ,1 Joul'- r.ulio- ' m.>r' , T.^.A. 



incti-r in which um-qvial hi-.atina of thi- , I'lof. 1. IV A. < 



coiumtis of air in th'- \\\n lompari ni.-nl- will Hould-r, l ~s.\ 



<-;iusi' a dt-fl'-dion of th'- \an'-. Tin- radi.ant M,. \^ 



h'-;il from a c.-indli- tlaiii'- ,al ,-i <li>lanc.- of .--^ ; 1),. | 



ill'-U-'-s falli";-; ■>" on'- >id.- of ih'- parlilion [ I),-. \. ,,,,; ^, , ,.,. ' " ' * •' 



prodiu-rd ;, ■ ,,f 5 ,ni. of Ih.- spot of i 1),-. (■ Hirklin^;. 1: 



lil,'lit on 111- ( Iwini; lo its hi^h S'-iisi- I ^I,-_ ][. s. Hold-; 



bilil\, il w.is foinul niM-.'ssary to siiirkl tin- ' M,-. A. Ilolli'k, 



columns of ,iir friiiii di-auj;hls and radiant , L'..S..\. 



h.-at fr<im f-\l. rnal souir.-s, I Prof. I'. *'. 1:: 1; 



.\ cui-r'-nl of ii .-niii^-r.-s w,,^ pa-s,-d throii:;li U.S.A. 



tin- thin copp.-r win- cd. ami a l--nip'-i-;ilur. ' f"),-, K, KM-'oi;, 1. R,^.. - 



.L;r.-idiini was thus i-stahlish.-d from ilr- c-nir'- [), \' \\ Ki-.. ,-,,\ iion, 1 



low.ards laili . !id of th'- wir'-. ill.- \,i'. -Aa- ;n--,M! I ."s.V. 



d'-tl.(-l'-(l o\ I hoins.m .1! "x,], |, I I.,,,,-, I ■ 



the iil'-i|UaIily of th" jo, a. ;h-- 1 w o li.i;, \]i \' j M,,,:,;-. ] 



wir--. 'I'll'- posilioii of til- \.aa' was fuirh st.'adx .-it:-; aii D^ jj "M,,il,i-. l-'.ihi;;, >v.'vi. - 



:nl--r\al of tiv.- minul's, ,-md th'- spot of li;;hl w.-is hroui^hl j Prof. .\. !•. Xaihor-I. s-o,ldii- 



to til'- ci-iitn- of till- stall'- by turnini.i thi- h.-nt wir.- 11 Prof. h". ^^ i'.R.'^.. I : 



.ill.u-h.'d to tlic fibre. 'Iln- curr.-nt was rapidl\ i.-v.-rs'-d. < \\y (;,,.. l-ls.-- . I 



anil th.- spot of litilu mov.-d c|uickl\ throuj^h S ini. on , London 



''1 ■ s, .d'-. Th'- wir.- ((/ wa- adjust. -d to slii^hlly diff'-r.-n' ♦ y],.., (■I,.,,!,.,,; K.-id. Mill • 



p,i>--:,>M^ in oi'd'-r to \-,ir\ liv- in.-qualit\ of th'- J. hi!' 



' ' ' i'!\ til- ^ani' r'-snli wa- found in .-\-.-r\ 



.I'l'd \]<>]\] ih'- dii-.-ciion ol motion of 



'■•■- o'.'; ,'i coppt-r heat w,is absorb. -d wli.-n lb.- 



(■iiri'-nt tlow'-d up the temperature i;radi'-m. 



I'o show th.- l\-ltier effect, an iron win- 4 cm. loiu^ .md 

 I mm. diam.-t.--r wa-; sold.-.-.-d to .uioth-r p.iir 

 l.'ads and b.-nt just imd. r tli- parlilion. I'h'- i. -.. 

 a cun-.-nt of i ainjx^re throu^li ih-- junction- was siilVa i-n: 

 to mov.' th.> s[X>t of light off tln^ seal--, 'riicn- is tio n.-.-.l 

 to n-V'M'se the current in this cas,-, and it can b.- shown 

 quit.- '-asily that heat is absorb'-.l wli'-n th-' curn'iit tlow- 

 from copp.M- to iron. 1-' W. Jorivxn. 



S,vath-\V.-,sterii Polytechnic, Chel- a. ^ W ,, M .\ s 



xo. 2168, VOL. 86] 



Dr. 1). 11. so.-.i. 1'. 



Mr-, n, n, s 



Dr. M. ( . >-a- 

 .Mr. 11. 11 

 .Mr. n. M 

 Pnd. V. 1 

 Pr. IV W ■ . I 

 I .s..\. 



Dr. I.. R. Wi'Iand. 



Mr. and .Mr>. Clem 

 with the addition of : 

 a recofjnisable figure 

 inf'nt aft.-r thf> w 



- - in L..t 



