56 
REPORT— 1847 . 
tissoe by cndosmosc of water md the resistance of the cnticle. 4 th. That the m- 
tity or rapidity of endosmose is not influenced by heat or by light. 5th. Thatli^i 
IS the only agent of the natural position of leaves and of their turning over Theala. 
verted. The blue rays are the most, the red the least, active rays. 6th. 'Hat fab 
^ physical attraction or repulsion property m ealW, 
, over of leaves takes place sometimes by a torsion of the foot- 
a ‘^'•Img of the flat part of leares, 8lb. The blue rsv tpoem 
ner, Ti* leaat, active in operating the turning over 4e lessa. 
r »» much increased when their inferior snrfice is 
posed 0 ig . 10th. That the decomposition of carbonic add and tbedisai- 
gagement of oxygen gas are under the same circumstances considerably diminisfad. 
Un the bearings of Photography on Chemical Philosopki/. 
lig Nevil S. Maske/.ynk. 
constitute the solar beam, luminositj', calorie, uid stioiMm, 
Snlf*^«'ccts ; .he one apparently con^lwd in giility 
Tha 5 angles of refrangibility, the other rart/ing ia 
niinoiihv illuminating and the vaiying one of colour charaetiffiK [o' 
iinita* in' I uf autagouizing mechanical cohesive force in Wiei 
at v«iou. mX proparti« pointed out by Molloui m tt.tp«|i. 
alllni'llJlfllfi?' to have a chemical ncUon of a constant clarscWNt 
seem pnn«ro.i» woll as certain chcmico-dynamical effects, soraeofwliitli 
hodiea ahsoi-K®’ while also the different manner in whidi ifleKb 
difTerent rcfrmigibilities (wliich may be caM «!>« 
other two priDcipIps^'^ “ «milar variable property to thofe rfllw 
appears to bo a force anlagoniitio to thif 
in the^olar beam ptobabJy never of a suffldent power, 
witlioiit ibe presJnee "“y salt, not oven in the srgendnesdt^ 
while actinism lends m L * matter, or some other second body. 
present, those atom* atoms of 
liable to a similar deconnSL^^'”’?® groups of bodies, which agim ^ 
negative nroeeM u-iit, { m necessary conditions are present, as lalhs 
,1 ‘‘'u «r«'v=r,.aud the posit Jproc, srith ijdo ofpoW.. 
oxide, AS may be provetUv "* processes on paper, and 
evnnide of ootastiiim ‘te sunoiis reactions with ammonia, hyposulphiteof*»^ 
of ono salt for .hose of '**“ affinities of die 
deconipositioti the tendenc? !°r ‘*™J*'* body present, that carry 
It is worthy nf reniatk^ influence. 
(taking the Biitniirirsah.nl .i! ‘Z*® "‘’‘I"* ‘n point of fadlity of resolution, of «J« 
(or rather ac(inalufif\ ‘’fotb«rs)> in the case of these aeriRo^’^****^ 
series. Kirst stamf thiapparently idenu'eal with the 
nitmics. &r . atd i.l„ then the strong add sd^ 
and sulphides. weaker ones, acetates, benzoates, &c., and finally asid* 
of tierr/vpMenf of action of actinism is the very inlerestiagpbaiK®^ 
where merely iPBcLni. Ff ^ I a™ three sorts of derclopn'cnt- P*^' 
produced. 'Hie i?,.*. 5 produce contrast where the decomposition 1“^ 
•ible when first set im bv where an effect, 
tnainine in the dark nr ; ** gradually broueht out spoDl.:neously hf *®’ 
compound of a eharuFf! made more perfect by the ad»Iirioucf«"* 
vipusly by the“icl readily undergoes the kind of change tel “Pf;; 
I-'iob'g has accounted for to belong to the class of meiamonihose* «“ 
^^otion from one atom in of catalytic action being a commuiiican® 
ennhlfij to attach tlieiiu! J'tf "^1 11*® lb""'! Itiud of development is, where Tapmi^ 
this beloiigg m actino 1 surfaces by these being exposed to aclinic eetto*- 
next refer: ^‘^‘'"O'dyiiamical or mechanical effects of actinism, to which wefJl 
