2o8 Kc^zu Publicatt07iS, 



Mathematical Clafs are : Kaftner on the external furface 



of the fcrew. — Klugel on a new conftruftion of a compound 

 obje6l-glafs. — Kaftner on the content of the threads of the 

 fcrew and the fpace between. In the Hidorical and Philo- 

 logical Clafs are: A paper by Profelfor Heyne, to fliew 



that there was no extinftion and revival of the arts in the 

 middle ages. — Profcflbr Heeren on the diverfity and affinity 

 of languages in the ancient kingdom of Perfia. — Gatterer's 

 fourth treatife on the Sarmatian extrailion of the Livonians. 

 — ProfeiTor Heeren on the ancient form of the Perfian gulph. 

 — Profeflbr Heync on the means of difcovering the earlieft 

 fiate of Homer's poems, and of reftoring them. 



^Icmorias da Acadcmia Real das Sclencias de L'lfhoa, 8cc. 

 Vol. I. from 1780 to 1788. Lifbon, 1797. Small folio. 

 575 pages. 



THE Academy of Lifbon was indebted for its origin, in 

 the year 1779, ^'^ *^^ Duke de la Foes, uncle of the prefent 

 queen, who is alfo prefident of it. The diflercnt branches 

 of knowledge to which its attention is direfted are : Natural 

 Philofophy, Mathematics, and Domeftic Literature : and 

 the Memoirs are divided into the fame number of claffes. 



In the Phyfical Clafs are : — Domenico Vandelli Florae et 

 Fdun^ Livjitanic^ Specimen, which is a mere nomenclature : 

 Tie Vulcano OViffiponenJi et moni'ts Frmin'u, by the fame. The 

 above two papers arc in Latin, the reft in Portuguefe. Two 

 papers by Joao Antonio Dalla Bella on the magnetic power. 

 Various obfervations in chemiftry and natural hiftory, by 

 Dominoros Vandelli. Obfcrvations on a plant hygrometer, 

 by Antonio Soarez Barbofa : this hygrometer is made of the 

 twifted beard of the feed of a geranium. Phyfical obfcrvations 

 in regard to the lightning which in different years had ftruck 

 fome of the royal buildings at Mafra. Meteorological ob- 

 fcrvations in various places by different men of learning. On 

 the uncertainty of our knowledge refpedling the plant which 

 produces myrrh, by Joao de Loureiro. On the nature and 



real \; 



I 



