AMCENITATES ACADEMICS. Vol. I. 

 Holm. 1749. pp. 610. 



I. Betula nana. Z. M Klafe. 1743. 



In this difTertation is exhibited a complete hif- 

 toryi accompanied with a figure, of the Betula 

 (nana) foliis orhiculatis crenatis. Spec. Plant, pp. 

 1394, or the Dwarf Birchy which cloaths the Lap- 

 land alps in great quantities, and is of fignal ufe 

 in the oeconomy of the inhabitants of that ardic 

 region. The branches furnifh them with their 

 chief fuel, and the feeds are the food of the ptar- 

 migans, or white partridge, (Tetrao Lagofus^ 

 Syft. 274.) Thefe birds, being much efteem(^d, 

 make a confiderable part of the fuftenance of the 

 inhabitants : great quantities are caught in the 

 winter feafon, and fent to different provinces. 

 Before Linn^^ius made his Lapland expedition, 

 this Birch had been confidered as a variety only of 

 the common tree of that name; but its diftind 

 fpecific charaders have fince been eftabliflied. 

 This tree has within thefe few years been added 

 to the Flora Britannica^ having been found in the 

 highlands of Scotland. ^ 



2. HisTORiA naiuralis et medica Ficus. C. He- 

 gardt, 1 744. 



From the earlieft times, the cultivation of 

 the fig-tree has been an important objed in all 

 the oriental countries. In this difTertation we 

 are prefented with a hiflory of this genus^ of which 

 9 the 



