...thin coating of line varnish ; but this has not destroyed their susceptibility of becoming coloured. When the solar rays are passed through a print, and...them by producing different intensities of colour. " The images formed by means of a citmera obseitra have been found too faint to produce in any moderate...

...thin coating of fine varnish ; but this has not destroyed their susceptibility of becoming coloured. When the solar rays are passed through a print, and...them by producing different intensities of colour. " The images formed by means of a comerct ofocura have been found too faint to produce, in any moderate...

...their susceptibility of becoming coloured. 'When the solar rays are passed through a print, and tlirown upon prepared paper, the unshaded parts are slowly...them by producing different intensities of colour. " The images formed by means of a camera obscura hare been found too faint to produce, in any moderate...

...thin coating of fine varnish ; but this has not destroyed their susceptibility of becoming coloured. When the solar rays are passed through a print, and...prepared paper, the unshaded parts are slowly copied j but the lights transmitted by the shaded parts are seldom so definite as to form a distinct resemblance...

...parts of the leather or paper, to cause them to become dark when exposed to the rays of the sun. " When the solar rays are passed through a print and...resemblance of them by producing different intensities of color. " With regard to the preparation of the solution, I have found the best proportions those of...

...thin coating of fine varnish; but this has iiot destroyed their susceptibility of becoming coloured. When the solar rays are passed through a print and...resemblance of them by producing different intensities af colour. “ The images formed by means of a camera obscura have been found to be too faint to produce,...