92 REPORT— 1847. 
infcnial parts of the eye; and conceives that it would act from the borderofthecmci 
as Its most fixed point, and that it would on the whole serve to advance theeiii 
Mv towards the cornea, and with the ciliary body the lens also; this effect be® 
wded by the compression of the vitreous bo^, and the intervention of the caiuid 
I ctit. 
Ij^udy. the Mithor describes the system of divisional planes on the opposite mAw 
of the mmmo lens as more cumpHeated than is usually supposed. Inthenunu 
m*tU8 they appear to be triple, a.s in ttiostm.-inimaIia ; .nnd insoniecatsiartsofinfua 
l*i« triple division has been very apparent; but in the adult human eye these pioa 
orancli again anti again, so as to amount to sixteen or more, often nmnin’ ia suir* 
rcgtiinr nianner and dividing the lens into very iineijual coirpartment*. 
.1 I of most ot iho points detailed in this iiaper wa^givvii in Jmea 
the * lliysiological Anatomy and Physiology of Man,’ by Dr. Todd and the awher, 
On the I'm of Gma Percka for the purpose of making Moulds far Casts ^ 
Objects in Natural History, S^c. By Geobgb Busk, F.LS. 
I .r.^® gtUta perclin, wliou applied to this purpose, is to he soUcned bv iramtrauo ia 
oi uig waUT and rolled out in sheets of a size and thickness pr itonioiuSe It d>( 
.ibject of winch the cast is to be made. For small and moderate-.Lil objects,• did- 
. "1 ■’’•f'’ of an inch is suflicient. An appropriate plcc.- tborwglilj 
o ened in boiling water is to l>u placed upon the object and pressed firmly brcuuM 
to tmgera or a soft pud into all the irregulurities of the surface, andalfcwtH' 
ool, when iho mould will admit of reiaoval. If it is desired to take theiuoiiHdi 
cyjioancai body, such as « long bone, or other entire object, the sheet of guttirptciit 
Jinf. w,?"" it entirely, and the whole while hot is to befirmlyi’«*i 
»rw._.L nther fit baud, so that the overlapping edges of the sheet may 
»i!^ ^ pfvssiire. Moulds of Uiis latter sort are to be removed by slitiiiif 
rrlsM * r tnorc directions, and after tlie object is removed, bringing llj* 
^ logetlior and binding the whole ngain firmly wiib the bond « 
«!. of tbii liquid plaster. In the cw«f 
the former “bjects, the mould should be removed from lircsriaftrr 
unlv.*nr> ). "oftened by inunei-siou in boiling water, lu thiscawowost 
only can be taken from each mould. 
<mi*ite apuHcable only tonbjeefs sufficiently firm to bear tk re- 
such sa il.r. I 4 the removal of the mould when hard. But soft objects, if rwibiW, 
such as the human flesh, admit of being modeled in this way. 
On the mind asid Deafmui Dumb. By Richard Fowler, MM.FM 
deJ'Lnddllmf.T'"-"^" referring to the cases (six in uiimber) of pen(ias« 
girls whom he ’ " Inch he ha.s seen, and particularly instances tffOTQiaf 
nuirkhble for the ar **» *« asylum for tlie deaf and blind at re- 
JudgL ftom ife instruction. . 
of eSmfl oSe? 1 deaf seek to inform tbriridr« 
limited To thol^^ ? S" thinks that tlml 
S Idimt « extended to even- 
are to ie founi? r iudecd iliat the perceptive sensations 
po^sVSh vilSr’ JjPtween pei-soris bolh bUnd and deaf, and pen‘«^** 
pn.^_ : J hearing, consists, the author thiTihs. hi this, that the htt 
exei 
e Sir II. Davy s ‘ Sensations of extended Touch after breathing the Nitrous Oiide 
