PLANTS OF THE OCEAN. 57 



weeds, such as Melogloia, which are glutinous, must 

 not be pressed at all, but laid out to dry, and when 

 perfectly so, then moisten the under side of the paper, 

 and give a gentle pressure only. 



v Others will not adhere to paper, and therefore, 

 when dry, brush them over with a little isinglass dis- 

 solved in gin (laid on warm), and they will then be 

 fixed closely to the card-board or paper. 



Another preparation is : One ounce oil of turpen- 

 tine, in which some gum mastic the size of a nutmeg 

 has been dissolved. This gives a gloss to the speci- 

 men, and helps to preserve the color. 



You must change the blotting-paper and muslin at 

 least twice during the process of drying larger sea- 

 weeds ; the smaller ones will be ready in a couple of 

 days for the album, on the second day giving heavy 

 pressure by stones and weights besides the strap. 



