International photographic exposition

be expected that the autochrome plates. subjected as they necessarily are to a particularly thorough treatment of orthochronlatizillg dyes, should suffer somewhat in keeping quality. ‘I’11e makers, however, furnish these plates under a time limit g~larantee as is now frequently clone lvith man); perishable photographic materials. ‘IIcI-e arc ~~~ltlo~tbtetll~ son~e dra~~back~ to the process. ‘I’he plate nmst be viewed 1,~~ transmitted light, the illumination is subduetl by the relatively large surface covered by the silver deposit reclt~iretl to screeu estralleous color; replicas cannot be made, the time (of esljosure i,5 greater, and, f-inally, the manipulations are more numerous than is usual in photographic procThese objections are of relatively minor character when esses the state of the art is consideretl. The 3Iessrs. LumiPre have SLKceeded in devising a process of producing transparency photographs faithful to the colors oi nature and readily available to all whcJ are conversant jvith current 1~hOtOgraphiC methods. The Institute considers this achievement in the art one of the most important advances of the tlav and entitled to the highest commendation and accordingly a\vartls to -4uguste and Louis LumiPre of Lyons, Rlonplaisir, France, the ETLI’OI’T CRESSON MEDAL for their Screen-Plate Process of Color Photography. Attest : JAMES CHRISTIE, Sccl??tnE.~‘.

INTEKNI\TION.K PHOTOGRAPHIC ESPOSITIOK. The “ Photoin graphische Gesellschaft zu. Kiga ” will hold such an exposition Kiga from July 28 to September 28. 1910. The exhibits will be ; (2) photog-divided into nine groups : ( I) S cientific photography raphy in colors; (3) artistic photography; (4) snapshots, travel, and architectural photography ; (6 ) scenery, etc. ; (5) technical photography for reproduction (press and printing methods) ; (7‘) photography for moving pictures ; (8) photographic apparatus, ,qnpplies and chemicals i (9) literature pertaining to photography. Exhibits should be plainly marked “ Internat. Photogr. ,4u.cto Mr. Leopold Ewald, Spedistellung. Riga, 1910 ” and forwarded tur, in Stettin, Germany, where they must arrive not later that? June 14, 1910.