42 TRIANDRIA, 



the juice acquires a due consistence, it it suffered to 

 cool in a proper vessel, and the sugar concretes into a 

 crystallized mass. This, after being separated from 

 the molasses, is sold under the name of brown or 

 moist sugar. This same sugar, more purified, be- 

 comes white, and being cast into conical moulds in 

 the process, is then the loaf sugar of the shops. 



Sugar, as a part of our necessary food, or as adding to 

 our luxuries, is too well known to require any descrip- 

 tion : but its use as an aliment is by different medi- 

 cal men differently appreciated : while the great Boer- 

 haave supposed it to have a tendency to emaciate the 

 human body, John Hunter recommended it as a 

 restorative in cases of great debility. However, in a 

 moderate proportion there can be little doubt but that 

 it is nutritious ; for all animals, in their earliest state 

 supported by milk, are nourished by a food containing 

 a great proportion of sugar; and Dr. Cullen is of 

 opinion that all food is nutritious in proportion to its 

 saccharine quality : there are, however, well authen- 

 ticated cases where an excess of sugar has been found 

 to have done much harm. 



British Grasses. 



Botanical Generic Names. Common Names. 



35 Agrostis 11 Bent-grass 



14 Aira 8 Hair-grass 



8 Alopecurus 5 Fox-tail-grass 



