[ 232 ] 



dera^ and to the late Dr. Aljhn's Diflertation on 

 Botany. It hath been before obferved, that Lin- 

 N^us was honoured with a premium from the 

 Royal Academy of Sciences at Peterjburgh^ for his 

 excellent Treatife on the Spnfalia Plantarum^ in 

 which he is thought to have moit irrefragably 

 proved his pofition. 



13. Nova Plant arum Genera. I C. M, Daffow, 



1747- 



In this paper are defcribed and eftabliflied the 

 natural charaders of 43 new genera^ all which 

 vv-ere afterwards taken into the 5th edition of the 

 Genera Plantarum of Linn^us, publifhed in 1754. 



14. Vires Plantarum. F, Haffelqulft, 1747. 



Pradlical phyficians have wiflied, and fome have 

 formed the idea that it is pofTible, to deduce tjie 

 virtues of plants from their agreement in fimilar 

 characters of frucftification, in habit or agreement 

 in natural orders^ or clafTes. Mr. P ether ^ long 

 fmce, was among the firfl that hazarded fome re- 

 flexions on this fubject : fee Philofophical Tranf- 

 adtions, N° 255, and Lcwthorp^s Abridgment, 

 vol. ii. p. 704, And the very eminent Dr. 

 Hoffmann has a profeiTed diifertation on it, in 

 the fifth volume of his v/orks, p. 58. It is the 

 intention of the prefent paper, written by this in- 

 genious but unfortunate difciple of Linn^^us, to 

 extend and illuftrate the fame idea, by this com- 

 mentary on the 1 2th chapter of the Philcfophia 

 Botanica j which contains the general dofirine af 



this 



