296 BOTANY. 



without any pressure. Conferva require to be ex- 

 panded in a shallow dish of clear fresh water, and the paper 

 they are intended to be placed on, should be introduced 

 beneath them, when they will generally adhere without fur- 

 ther care, and only require to be dried to be fit to place in 

 the herbarium. Fuci or Sea-weed, should be well rinsed in 

 clear fresh water, the larger kinds suffered to remain therein 

 for some hours, to extract the saline particles, after which 

 they will most readily (the fine leaved sorts in particular,) 

 be displayed on paper in the manner already mentioned for 

 Conferva. The Fungi are generally best preserved in a 

 pickle, which may be made as follows : " To two ounces of 

 vitriol of copper reduced to powder, pour a tea-cup of cold 

 water, stir them with a piece of stick or a quill for about one 

 minute, then pour off the water and throw it away. On the 

 remaining vitriol pour a pint of boiling water, and when the 

 whole is dissolved and grown cool, add to it half a-pint of 

 rectified Spirit of Wine ; filtre it through paper ; keep it 

 in a bottle closely corked and call it Pickle ; to eight pints 

 of pure spring water, add one pint and a-half of rectified 

 Spirit of Wine : keep this in corked bottles, and call it the 

 Strongeb liquor. 



t 



To eight pints more water add one pint of Spirit of Wine, 

 and call this the Weaker liquoh. 



Whatefer Fungus you wish to preserve, should be suffered 

 to lie upon your table, as long as it can be trusted without 

 danger of decaying, so as to allow some of its moisture to 

 evaporate, the thick and fleshy ones should lie the longest, 



