The Photographic art-journal . , then saturatethat with oxide of silver, put your water(nearly two gallons) in your cell and addof the cyanide of silver until your plate issufficiently coated, in one minute or in lesstime if you chose. Good results may al-ways be expected by this process. This 1853. The Photographic Art-Journal. 167 solution, by using, will continue to growweaker, consequently it must be strengthened occasionally with the silver, preparedaccording to the above, and as the cyanidewill-evaporate continually, it is necessaryoccasionally to add a small quantity, oneor two ounces;
The Photographic art-journal . , then saturatethat with oxide of silver, put your water(nearly two gallons) in your cell and addof the cyanide of silver until your plate issufficiently coated, in one minute or in lesstime if you chose. Good results may al-ways be expected by this process. This 1853. The Photographic Art-Journal. 167 solution, by using, will continue to growweaker, consequently it must be strengthened occasionally with the silver, preparedaccording to the above, and as the cyanidewill-evaporate continually, it is necessaryoccasionally to add a small quantity, oneor two ounces; this must however be de-termined by the appearance of the plate. When there is not enough cyanide, theplate will have a cold deep blue appearance,and if there is an excess of cyanide theplate will appear while or milky, and itwill buff very hard. When there is a lackof cyanide, there will often appear on theplate streaks, clouds, black specks, &c. &c. From tie London ART-COLLECTIONS AND INSTRUCTION.*. REPORT on the Ar-rangements and Charac-ter of French Art-Col-lections, and System ofInstruction in Schools ofDesign in France, pre-pared by R. N. Wor-num, Esq., Librarian, and Keeperof the Ornamental Casts of theDepartment of Practical Art,has been submitted by him to thesuperintendents. FRENCH ART-COLLECTIONS AND SCHOOLSOF DESIGN. section i.—Systems of Education. 1. Agreeably to my instructions I havevisited the principal Art-Collections ofParis and some other chief towns ofFrance ; and from my own experience, andinformation received, 1 believe there is nocollection whatever in France analagous tothe Museum of Ornamental Manufacturesrecently established at Marlborough House,nor does there appear to be any collectionwhatever of ornamental casts, as such, ac-cessible to the students of any School ofDesign There are collections of specificmanufactures, such as the Ceramic Muse-um, or Pottery and Porcelain collections ofSevres ; and there are many collections ofm
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectphotogr, bookyear1851
