♦ KNOWLEDGE 



[July 31, 1885. 



meridian-lines an 

 but takinrj the (■( 

 40° west, of C.vcvi 



(To le eonlinued.) 



PHOTOGRAPHY AND MEDICAL 

 JURISPRUDENCE. 



! Bi- William ^[atiikw.s. 



II.— THE GALTOX CoM n )SITi:^ I\ TirKIH UEIATIOV TO 

 THE DETPJnilXATloX oF IDKNTITV. 



THE achiovonunt of , ,.nsMli,l „ in- into ;, ~,uv\e tvi.ical 

 plK.k.-rapI, thr ]. rtr,,it. nf mx ,.,• s-von ..i",:,r:,t.- 



to follow. Little l.v litil-, (lie li.M of in.|uiry ^^ ill 

 extend itself. In tli"> ii:.tural cuir^o of ovolm ion," ] o.-m 

 bilitiea will loom into vi,-« tliaf, tin-- f,,r, ;n-e not'«itl,iii 

 tlie scope and purj'o>r . f tin- i \|ioi.iMioi,( Ji.t <. 



developments falK >o ontii-oiv within the jiaOiwav •! 

 procedure tliiit it.s inve,>ti_',itio!i o mMit lu. nuirli loii 'or 

 postponed. In this very ih.voI port r.iitiire of tlie -e^rni- 

 posite order " there are .some at tonihml [ilicnnmena that 

 are of a nature -at onee to eli:illi-no-,. ohser\ation imd to 

 lead in the direction indicated. 



At the very threshohl it hoooino, :,i.p;,ro.,t tl,,,t .luo 

 attention has not I oon ■, .i oof , ,. .,| ;i j., .|i i li- o. n joi,,l uv.^ 

 — certainly uirha- h-—- -■ o. , ,. , o ;,,,,, . i' m ; V- oio,.! 



photographs, it is..L\ ioa., tli.a tlieii- ,-,uperstriiciure should 

 be constituted, of portraits taken at definite and well- 

 .separated epochs. 



The changes which ensue from youth to maturity and 

 from maturity to decadence are clearly amenable to cer- 

 tain physiological limitations. These, by this time, 

 photography might have definitively elucidated. The 

 •'Seven Ages" of the dramatist di.fplay, w£ may rest 

 assured, various " poLut-s in common", which the photo- 

 grapher, as well a,s the psychologist, might now-a-day 

 detect and investigate. That the' " bny is father to the 

 man" is admitte.l. Tint «],■.+ •> n.vf-'ir v. ill that be in 

 .whiehthe hoy^ ,1m. i,,v... .'.. . ,i i' .. . i .),,, j„.,,tiee ar,. 

 ^conjoined i.r'- , . ; ■ ,: , , i ,. :, - ^liat will 



,, In the " Gallon . |, - • ' ;, i,,, | ,i n,,ted that, 



;W those that are tlo , , . , ...-,,] n,,, ,j,^,,j outcome 



isinsomeparcieul;;: . ^ o', I l,f,-liko than are 



the separate portr 111 ■'■'•. ;, ., , , f t],,, ,,1.,,^^,, j{ 



■the question be ).,,■ ee.eol, ,on'.,n^oly, Wiu^n.-e eomes 



■ olf,., 



in relief. The appear- 

 'esiiue." How happens 

 1 out that, in akiudred 



!■ -:.^ :re designed to 



It .should bo I'.'oo^n.i., 



some degree the a,-] - . • , 

 ^ance might be titU ■ 1 



-this? lu reply, it; ,.. , , 

 .branch of aj:t — in all »ucl 



.assume the appearance of ■ rk or ha: 



.rilievo, the artist adopts a _ . • int which is 



readily appreciable. Alon- •]■..■ n: ojo,, between the 

 Jialf-tones and the darker outlines of tlie en'^n-aved work, 

 ,;there is always interposed a zone of ab.solnte white' 



representative of the play of light upon the illuminated 

 .edges of the design. 

 ,,- .Similarly, it will always occur that in the case of 



superposed portr.-its, and, d fortiori, in those in which 



■ifoM'tlr ennfnrmal 



Here, then, we obtain a giin.j -' f rl,, o> nations under 

 which this effect shall bccon.o iho ,,;, ,t ol,., lo„.,ly pro- 



It 



o.i.Ko, .. ilio ti.luoial liii 

 r. will : ri-o r.n difficulties 



.1 ::■, I;,.\i,;,l,lo, that in the 

 ro -m inj- i he sitter has 

 -A. v.- a,to,n,:)te.l. Which- 



,upor-nnioMtion will be 

 -ue. Interposeil between 

 s and the e-xterior marginal 

 •row belts of lighter tinge, 

 vill be ditterentiated. 

 tlerofore, we betoken the 

 11 1 ;,rri,.tle result in photo- 



,. for the imreiiious to 



THE "GENESTA." 



THE great, v.t .■ 

 will bet ho i 



Now Y, rk Yacht 

 ■d lyil.oyaeht.men 



.'!'a''i^.oh'tli:!t nley 



y ,. 'o ■ to 1., kuilt 



ilr.o : i 1 .:,o - • ^ ■ ■ ■ ,.' o, - , .; t he 



uio'/.. o, ;. ■ . •■ . ... ■ Iki-land 



uill .■■vA t^o , ..,■-,. ::,;,. ,l,nt ime of 



thorn will ^^ ^. ■ • ; '■ ; ■■ ■ Tliose are the 



amUe'ems'tol.o m'.. f^,:. -1 l.Vtk^ Yi.i.i.oo vaehtsmen. ' 

 It isunder.stood that tho match is to be three races, 

 best two to win-one a trianu'le 40 miles, one over the 

 New Y'ork Club eouro, and the third, if nece.s.sarv, 20 

 mil.'- ■.'..^ •:. Im:-o. ■■• '■'■-.■^ fo , -^ :;,.^■ If. . ';. 



T' o : . \ ■■ ] . y. . i' ■ ■ ' o„ Bros., at 



I'lo I -: : ', -1 ft. onthe 



w:,o ' , , lof- ;. ... 11 -o .;. ,-: . ; i. ■]. and 13i ft. 

 <lr.uo-1it. Althou'j-h ori-inallv she had oiilv GO tons of 

 lead outside, she now carries 70 tons of lead 'on her keel. 



* In the conjointure of a photograph of Mr. Gladstone, of thirty 

 years ante, with one of the present date, thia effect is strikingly 

 illostrated. In such case each portrait receires its due modicum of 



