174 



A FLYING TRIP TO THE TROPICS. 



Drive the nails until tliey are below the level of the skin, when the 



scales will cover the 

 '^ ^'^ holes, and they will 



not be seen. These 

 will support the 

 weight of the fish. 

 Now, with your pliers 

 cut off the heads of 

 a number of pins, 

 and use the points to 

 keej) spread the fish's 

 tail and fins. Put 

 the board on edge, and move your camera up until the fish nearly 

 covers the plate. Use a very slow plate, and give plenty of expos- 

 ure. When you have developed your plate, and come to print it, 

 vignette closely to the fish, by which means you can get an almost 

 dead white background. In case you do not use a white back- 

 ground, you may still print on aristotype paper, and then, with a 

 sharp eraser, scratch off all the print except the fish, thus getting a 

 pure white background. This sea bass, a male, with the dorsal 



WHITE PERCH. 



