The Photographic art-journal . mbination is only the heat and lightevolved by the vigorous union of the oxy-gen of the atmosphere with the carbon ofthe fuel. From these facts oxygen maybe regarded as the grand supporter of com-bustion. If it composed the whole of theatmosphere, instead of one-fifth, almostevery substance, even the stove in whichthe anthracite is burned, would be instant-ly burned and destroyed ; that is complete-ly oxydized. Oxygen is quite as essentialfor the support of animal life as for com-bustion. At each breadth we receive intothe lungs an amount of oxygen, a portionof w
The Photographic art-journal . mbination is only the heat and lightevolved by the vigorous union of the oxy-gen of the atmosphere with the carbon ofthe fuel. From these facts oxygen maybe regarded as the grand supporter of com-bustion. If it composed the whole of theatmosphere, instead of one-fifth, almostevery substance, even the stove in whichthe anthracite is burned, would be instant-ly burned and destroyed ; that is complete-ly oxydized. Oxygen is quite as essentialfor the support of animal life as for com-bustion. At each breadth we receive intothe lungs an amount of oxygen, a portionof which is thrown out in combination withcarbon, forming carbonic acid, a substanceto be fully described hereafter. Combined with silver, forming oxyd ofsilver, this substance is of direct importancein galvanizing the daguerreotype plate. Italso forms an essential part of good rouge,which is the red oxyd of iron very finelypulverized. 1853. The Photographic Art-Jonrnal. 241 From the London GUIZOT ON THE FINE ARTS.*. NY work proceeding fromJche pen of AT. Guizot can-lot fail to attract very ge-neral attention : in what-ever he undertakes we arecertain of finding strong in-dications that a master-mind has been engaged upon it; onethat thinks deeply, argues rationallyand acutely, criticises in a larsie andliberal spirit, and utters sentimentswhich are at all times honorable tohuman nature. He isoue of the fewpublic men whose high and just principlesthe political storms of France have be* nunable to shake, and whom the brilliancyof the new order of things which has arisenin that country cannot dazzle ; and so re-tiring into private life from that publicarena where his wisdom and prudence for-merly assisted in directing the affairs of agreat nation, we hear of him now onlywhen he gives the wo Id his thoughts onsome matter, which, either scienti6cal y,philosophically, or socially, is of universalinterest; and there are few beter able todeal with all or any of such subject
Size: 1182px × 2115px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, booksubjectphotogr, bookyear1851
