20 



same way, without using the iron ; in which case, the following 

 observations may be useful 



FEATHERS, if white, or of a light shade, will bear very little 

 exposure ; dark feathers may be left until the paper assumes a 

 tolerably deep colour. 



LACE. White lace, net-work, etc. will not bear much exposure, 

 and must be pressed very close to the paper ; black lace, etc. 

 may be exposed much longer. 



LEAVES, FLOWERS, etc. These may be advantageously dried 

 and pressed between blotting-paper for a short time before using. 

 They require considerable exposure to produce a perfect copy of 

 the veins and marks : in sunshine from fifteen to twenty minutes, 

 in ordinary day-light, for three or four "hours. They are very 

 beautiful when well executed, and may be coloured to imitate 

 nature very closely. 



WINGS OF INSECTS, etc. These being in general very trans- 

 parent, must not be exposed too long. When the body of the 

 insect has been preserved by drying or dissecting, so as to be 

 tolerably transparent, the following method will secure an accurate 

 copy. Take a light image of the whole insect, and then comparing 

 the copy and the original, cut out those parts which are less trans- 

 parent than the others, and having placed the object on a fresh 

 piece of prepared paper, cover it with the cut paper, so that the 

 dark parts may be first exposed to light. When these are well 

 delineated, remove the upper paper, and leave the whole exposed 

 till every part is sufficiently pourtrayed. The same plan may be 

 adopted for leaves and flowers, where the parts are of different 

 thicknesses. In copying wreaths of oak or vine leaves, the stem 

 may be replaced by paper cut to imitate it. 



ETCHINGS ON GLASS. By covering a piece of glass with lamp- 

 black and varnish, a subject may be traced on it with a point, which 

 may be copied on the paper. 



Pen and ink sketches on paper may be copied in the same manner. 



"The advantage which this process possesses," says Mr. Hunt, 

 " over every other, must be apparent. The papers are prepared in 

 the most simple manner, and may be kept ready by the tourist 

 until required for use : they require no preparation previously to 

 their being placed in the camera, and they can be preserved until 



