S6 Imperial Academy of Sciences, Pelershiirgh. 



resistance of fluids, and ks application to naval architectarcy 

 which the academy has puhiished in the following terms: 



Of the two theories of the resistance of Huids proposed and 

 applied to naval architecture by Don G. Juan, in his Exa- 

 meii Maritime, and by M. Romme, in his Art de la Ma- 

 rine, it is proposed that one or the other of them, for ex- 

 ample, that of Don Juan, shall be corrected and improved to 

 such a degree, as to afford results that shall differ from the 

 results of expermn.cnt hv so small a quantity as may be 

 practically neglected without sensible error : — Or, if these 

 theories cannot be corrected, that a new theory shall be 

 established and applied to naval a-Fchk<;clur9, which shall 

 leacb to conclusions of the same degree of accuracy ; — Or, 

 lastly, if it should be impossible to establish sucii a theorv, 

 it is pro}X)sed, that from experiments at Ica&t there should 

 be deduced a foinuda resembling those which haive been 

 given by Messrs. Bossut and Prony ; and such that it shall 

 be not onlv more conformable to experiments than those 

 formulas, but that it shall lead as nearly as possible to the 

 conclusions drawn from cxperin)cnts, even when- the for- 

 mula shall be applied to naval architecture. 



For the satistactorv solution of this problem the depart- 

 ment of the martne has appointed a prize of 1000 Dutch 

 ducats. Papers will be received till the 1st of July 1806, after 

 Mhich period no memoirs addressed to the academy will be 

 received on this subject, the time appointed being sufficient 

 for those new experiments which the solutions in question 

 render indispensahte. The memoirs forwarded to the aca- 

 demy muS't be written in a distinct legible character, either 

 in the French, English, or Russian language. 



The academy requires men of science who interhd to 

 make application for this prize, to addtess their memoirs to 

 the perpetual secretaiy of that body, before the 1st of July, 

 1806, and that the writer should clear the post charges a* 

 far as the regulations of their respective countries will al- 

 low. The customary mode of marking the memoirs with 

 a device or motto, and sending at tiiK; same tune a sealed 

 letter, having the same device, and containing the name 

 and residence of the autlior, is also to be adopted in the 

 present instance. The memoirs will be examined by the 

 department or the marine and by the academy; the latter 

 of whom will publi'^h the judgment they shall adopt, and 

 the departmciu of the marine will bestow the prize on that 

 author v.ho shall have satisfied the conditions of the pro- 

 gran>. 



XIX. In- 



