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liiftory, and confidered the feveral theories that 

 have at different times prevailed relating to the 

 produ6lion of thefe bodies, acquiefces in the 

 modern one^ which afcribes their formation to 

 Polypes, and which the late Mr. ElUs^ and feve- 

 ral other writers, have much confirmed and illuf- 

 trated. He then gives a copious defcription of 

 twenty fpecies, all found in the Baltic % of which 

 an excellent engraving is fubjoined. Thefe bodies 

 are found iri immenfe riiafTes in feme parts of this 

 fea : on the coaft of Gothland there arc flrata of 

 corals extending through tracts of feveral miles. 



5. Amphibia Gyllenborgiana. B.R.HaJl, iJ4.'^l 



A detailed defcription of 24 fpecies of animals, 

 all of the Amphibia z\2X^^ which were prefented by 

 Count Gyllenborg to the univerfity of Upfal^ of 

 which he was at that time chancellor % and to 

 which he had been a munincent patron, having inte- 

 refted himfelf, in procuring to be built and fur- 

 niihed, an aftronomical obfervatory j in reftoring 

 to a ftate of ufefulnefs the botanic garden, which 

 had been in ruins for many years \ in caufing 

 ftoves to be ereded, and a houfe built for the 

 demonftrator : and finally, in having prefented to 

 the univerfity his own mufeum^ colieded at a great 

 expence, and confiding of rare amphibia^ infe^ls, 

 corals, minerals, and moreover of many elegant 

 works of art. 



In this trad is exhibited the firfl fpecimen of 

 LiNNi^us's method of zoological defcription at 



large 5 



