4 



4^0 LINNiEUS IN 1735. 



Harderwyk, August 1, 1735, 



ON the 23d of June, Charles Linnaeus made his dissertation 

 at this university, for the purpose of obtaining his degree of do8:or 

 of medicine. In this dissertation, which is entituled Hypothesis dc 

 fehrium intermittentium causa^ the author founded every thing upon 

 observations and experiments; and having resided in the northern 

 parts of the world, he made his remarks upon what chiefly attrafted his 

 notice in those quarters. 



This celebrated physician put to press at Leyden his Systema 

 Naturae, of which one half is already printed off. It consists only of 

 seven sheets in large folio, and contains an uncommon number of ob- 

 servations. 



He founded the system of the mineral reign upon principia docimas- 

 tica. The genera concretorim et petrijicatorum have been so arranged by 

 him, that it appears impossible to add a single genus. He expatiates a 

 great deal on the generation of stones, and states especially, that they 

 are all either primordial like \h.t glarca and argilla, or produced by time 

 like humus, ochra and arena. He has added the generical charafters to 

 all the genera, which has never been done in mineralogy, which science 

 may by this means be easily acquired at the expiration of a few hours 

 study. 



He divides the vegetable reign according to a new system, borrowed 

 from the sex of the plants. He has more real genera, inserted in their 

 proper places, than any other systematist ever had. All the general 



* See Hamburgische Ber'ichten. Hamburgh, 1735, No. 75, page 617. 



methods 



