INTRODUCTION. 21 



paper store, or job printing office, made to order. Four 

 and a half, by six and a half inches, is a neat and 

 convenient size. But if you want to mount several 

 hundred or several thousand specimens, in the course 

 of a season, so as to have some to give to all your 

 friends, and to make up a number of books or 

 albums, to sell at Church or Charity fairs, then per- 

 haps the expense will be an item worth considering. 

 In that case you will find it cheaper to buy a few 

 quires of good 26 or 28 lb. demy paper, unruled of 

 course. This paper is in unfolded sheets, 16 x 21 

 inches, and will cut into convenient sizes for mount- 

 ing any plants ordinarily collected. By halving it, 

 you have sheets 8x 21, or lOgX 16 inches. By 

 quartering, the sheets are 8 x \o\ inches; halving 

 these you get an octavo sheet 5 J x 8 inches, 

 which is quite large enough for the great ma- 

 jority of plants. One half of this will give a sheet 

 4 X 5 J inches, which will be the size most used ) while 

 the smallest plants look best on the half of these 

 sheets, 22X4 inches. 



With your large white dishes, filled near to the 

 brim with sea-water, or, if you are away from the 

 ocean, with water made artificially salt, take a few 

 of your plants from the collecting case, and put 

 them in one of the dishes. Here, handling them 



