[ 19 ] 



hundred and fifty pounds. It reprefented a ferpent with 

 fcven heads, and had been figured as fnch by Seba in his 

 Thefaurus NataraHum. 



This celebrated monfter, upon an accurate exami- 

 nation, and by his acquaintance with the comparative 

 ftruiSlure of the jaw-bones of animals, Linnaeus found to 

 be an impofture ; and proved that thefe feven heads were 

 merely made up of the jaw bones of Weafels artfully 

 covered with the {kins of ferpents. A difcovery fo in- 

 jurious to its pofTefTor and the credit of the univerfity, 

 raifed a clamour againft the young naturalift, the fury of 

 which he thought it prudent to avoid, through the advice 

 of his friend Dr. Ja^nifch, by filently leaving the city. 



Profecuting the object of his journey, he reached 

 the Univerfity of Harderwyk in the end of May, and on 

 the twenty-fourth of the following June was admitted 

 Do£lor in Medicine. His inaugural thefis was a difler- 

 tation on the caufes of intermittent fevers, which in 

 1735 was publifhed in the Amsnitates Academical. 

 From Harderwyk he proceeded to Leyden and formed 

 an intimacy with Van Royen, who afterwards fucceeded 

 Boerhave, Van Sweiten, Leiburkhun, Lawson, and Gro- 

 novius. Among the caufes which contributed to enlarge 

 the views and ripen the judgement of Linnasus, may be 

 reckoned the facility with which he made himfelf known 

 and regarded by the moft learned men of his time. 

 Wherever he came, he found a friend, and that friendi 



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