As Mr. SoTferbj is anxious to promote the study of Bo- 

 tany, and conceiving that it will greatly assist beginners in 

 their pursuit to attach themselves to particular tribes of 

 plants, he would recommend them to peruse these General 

 Indexes for that purpose, and he observes that he is willing 

 to supply such sets of plates as may be selected ; thus, some 

 would prefer the Cryptogamous plants; others, some of the 

 other classes, or the Mints, Roses, &c. The Farmer might 

 wish for the Grasses, (he grower of Timber for the Trees, 

 and so each be supplied with his fayourite branch without 

 the labour of studying, or the expense of purchasing, the 

 whole. He also proposes supplying 4to. coloured copies 

 of the plates only of any of his works, or even larger, upon 

 receiving sufficient notice from any person desirous of ob- 

 taining superb copies. 



Mr. Sowerby understands that Mr. G. Sinclair is about 

 to publish an hortus-siccus of the Grasses upon which his 

 Grace the Duke of Bedford has instituted experiments in 

 particular soils, arid Mr. Sowerby hopes soon to be able to 

 lay specimens of those soils before the Public, with a yiew 

 to agricultural improvement. 



