1092 Transactions of the American Institute. 



had devoted some time and attention to what had been done to meet 

 the photographical wants of the traveler, and had seen and purchased 

 a number of. devices, which, more or less, met these wants ; but, he 

 was satisfied that the best result had not yet been obtained. He would 

 take pleasure of exhibiting, at another meeting, the Dubroni apparatus, 

 which, however, was little more than a toy, requiring a care in 

 cleansing after each operation, always difficult and sometimes impos- 

 sible to bestow. The Anthoni apparatus was better, but unsafe and 

 "unmanageable, precisely under the circumstances when it would be 

 most needed to work exactly. The best apparatus was that of 

 Albite's, on which he (Mr. Squier), had made some improvements. 

 This, he thought, was on the right principle, and contained more 

 nearly than any other he had seen, the elements of success. He 

 would show this at an early day. 



A great desideratum was, of course, to dispense with carrying glass. • 

 He had had some success in removing the film from the plate, and 

 thought that would be the way, and the best way, of meeting an import- 

 ant requirement in what he would call peripatotic photography. Better, 

 probably, than through paper negatives. Since, however, his own 

 necessities had exacted his attention to these matters, he had learned 

 something, and wanted to learn more about microscopic negatives 

 and their practical availability. Perhaps, through means of these, 

 and by the suppression of the dark chamber, or rather by its modifi- 

 cation, 80 that it would cease to be an obstacle and a nuisance, the 

 whole solution of the problem of the utilization of photography for 

 the traveler and explorer would be complete. How well these micro- 

 scopic negatives might be " thrown up," he did not know, and it was 

 a process in which he sought light and information. Travelers are 

 usually authors, and authors are often travelers. And all feel the 

 importance of a direct appeal to the eye of the reader in conveying 

 or illustrating ideas that no mere words can convey. 



The application of photography to what is called engraving, h6 

 regarded as a subject worthy the best attention of scientific photo- 

 graphers and practical printers, and he was happy to know how much 

 was doing in that direction. Many of his illustrations for his work 

 on Peru, were in course of execution from impressions direct from 

 his negatives on the block. But tliat next step was to absolutely 

 dispense with that costly assassin of all life and truth in a picture, 

 the engraver, through some device for relief photographic printing. 

 JJe meant a practical and economical device. Mr. Squier made some 



