On April 9th, 1868, I exhibited, at the South London Photographic Society, examples of nearly all the types of photography then known, amongst them a Daguerreotype by Daguerre, many of which are now in the Science Department of the South Kensington Museum, and were presented by me to form the nucleus of a national exhibition of the rise and progress of photography, for which I received the "thanks of the Lords of the Council on Education," dated April 22nd, 1886. There was nothing very remarkable done in 1868 to forward the interests or development of photography, yet that year narrowly escaped being made memorable, for Mr. W. H. Harrison, now editor of the _Photographic News_, actually prepared, exposed, and developed a gelatino-bromide dry plate, but did not pursue the matter further. 1869 also passed without adding much to the advancement of photography, and I fear the same may be said of 1870, with the exception of the publication, by Thos. Sutton, of Gaudin's gelatino-iodide process. On February 21st, 1870, Robert J. Bingham died in Brussels. When the Daguerreotype process was first introduced to this country, Mr. Bingham was chemical assistant to Prof. Faraday at the Royal Institution. He took an immediate interest in the wonderful discovery, and made an improvement in the application of bromine vapour, which entitled him to the gratitude of all Daguerreotypists. When Mr. Goddard applied bromine to the process, he employed "bromine water," but, in very hot weather, the aqueous vapour condensed upon the surface of the plate, and interrupted the sensitising process. Mr. Bingham obviated this evil by charging hydrate of lime with bromine vapour, which not only removed the trouble of condensation, but increased the sensitiveness of the prepared plate. This was a great boon to all Daguerreotypists, and many a time I thanked him mentally long before I had the pleasure of meeting him in London. Mr. Bingham also wrote a valuable manual on the Daguerreotype and other photographic processes, which was published by Geo. Knight and Sons, Foster Lane, Cheapside. Some years before his death, Mr. Bingham settled in Paris, and became a professional photographer, but chiefly as a publisher of photographic copies of paintings and drawings.