hojial Acadeiny of Sciences at Berlin, Bi 



Defcriptlo7i of the ConJlruBion of the Arms. 



Fig. I. and 2. It is evident that arms, as commonly fixed 

 in mortifed (hafis, are weakell in one direftion, and that 

 commonly the direcStion ot the ftrain. To remedy this de- 

 feft, thti feather-pieces FF are applied all round, having their 

 broadel't ends towards the centre of the wheel, and being at 

 right angles to the breadth of ihc principal arms. In order 

 to unite them firmly to the principal armSj and conneft the 

 whole more firmlv, a ring of iron, R, is applied on each fide: 

 blocks of wood, W, put m the vacant fpace between, and the 

 keys KK, bring the whole home to the (liaft. 



N. B. In fome cafes it may be eafiefl; to introduce the 

 tvater in the direftion X Y, as it was in one of the models, 

 inllead of that on the fliaded part of the plan. 



o 



XIV. Proceedings of Learned Societies. 

 ROYAL ACADEMY OF SCIENCES AT BERLIN. 



'N the 6th of June the academy held a public fitting to 

 celebrate the anniverfary of the king's birth-day. 



Prize Que/Iions, 



The Phvfical Clafs had propofed the following queltion for 

 the year 1801 : 



" Has eleftricity any influence on matters which ferment? 

 If it has, what is its aftion ? Is it favourable to fermenta- 

 tion, or docs it prevent it? Does it produce changes in the 

 products of fermentation ? What advantages may be de- 

 rived from the development of this matter to improve the art 

 of making wine; and ihofe of brewing, making vinegar, and 

 diftillingl'pirits?" 



But as it received only one memoir on the fubjeft, which 

 was not fatisfaftory, the clafs propofes the fame queftion for 

 the year 1803, with this exprefs condition, that " thole who 

 attempt to anfwer it, will do fo by a feries of eflays and expe- 

 riments calculated to produce evident and certain refults." 

 - The Philofophical Clafs propoled for the year 1803 : 



" Can a moral appreciation of adions be taken into confi- 

 dcration in the e(tabli{liment and apjilication of penal laws ? 

 and, if it can, to what extent?" 



The Clafs of the Belles Lettres again propofed the follow- 

 ing queftion for 1803 : 



On the Goths and Gothicifm. 

 " I. Among the nations who contributed to haflen the 

 Vol. XI. F dowufall 



