454 PRIZE QUESTIONS. 



me'lal of the va^ue of one hundred Roman scudi. The preferred memoir will 

 be published entire or by extracts iu the Acts of the Academy, aud the author 

 will receive fifty copies. 



N. CAVALIER r SAN BERTOLO, 



President. 

 P. VOLPICELLl, Secretary. 

 Rome, June 11, 1S65. 



ROYAL SCIENTIFIC AND LITERARY INSTITUTE OF LOMBARDY.— SUB- 

 JECTS ANNOUNCED FOR COMPETITION IN THE ANNUAL MEETING OF 

 THE 7th august, 1865. 



Class of letters and of moral and political scienrcs. — Subject for the year 

 18G6, proposed 7th August, 1864 : " Of the principle of nationality in modern 

 European society." Time for presenting the memoirs, the whole of February, 

 186'i. 



Class of mathematical and natural sciences. — Subject for the year 1867, pro- 

 posed 7th August, 1865 : "To give the genetic history of some species of in- 

 testinal worm pertaining to the family either of the Ascaridte, or the Oxj^uridas, 

 or the Strongyiidai, describing the entire cycle which it fulfils ; prefaced by a 

 succinct account of the actual state of this branch of science." 



Recent investigations in Germany seem to favor the opinion that the nema- 

 toid worms undergo metamorphoses similar to those of the cestoids. It would 

 greatly promote our knowledge of this department of science to verify the reality 

 of these facts with new and conclusive experiments in addition to what has 

 already been performed ; but this cannot be done except by following the de- 

 velopment of a considerable number of species belonging to the order of worms 

 above indicated. For this academical body, however, it will be suflicient if an 

 account be given of the mode of evolution of some species pertaining to one of 

 the three families of nematoids, of which the ascaris, the oxyuris, and the 

 strongylus are types. As these families comprise species by which man and 

 many domestic animals are infested, inquii-ies such as these might prove also of 

 advantage to medical practice. The memoir should be furnished with appro- 

 priate illustrations. 



The time limited for competition is the whole mouth of February, 1867. The 

 prize for each of the above consists of 1,200 lire. The author will retain bis 

 property in the memoir, but the institute reserves the right of publishiig it in 

 its Transactions. 



Prizes of the Cagnol a foundation. — Subject for the year 1866, proposed 7th 

 August, 1864: "To show the evils and imperfections inherent in the military 

 conscription in the different provinces of Italy, and to indicate means and ar- 

 rangements adapted to their prevention." 



The time for presenting the memoirs is the whole of February, 1866. A 

 premium of 1,500 lii-e, and a medal of gold, of the value of 500 lire, will be 

 a,warded. 



Subject for 1867, announced 7th August, 1865. — The opinion has obtained 

 among many cultivators of the silk-worm of the province of Milan, that tlie 

 rearing of the worms, conducted in such a way that in ordinary seasons the 

 process shall be completed before the end of JMay, will usually yield good re- 

 sults, and the worst results when completed in June. It is desirable to collect 

 scientific fact3 which shall serve to evince whether that opinion is confirmed by 

 the demonstration of a difference in the proportion of nitrogenous substances at 

 dilferent stages of development of the leaves of the mulberry. Ilence the fol- 

 lowing inquiry is submitted to competition : " To determine separately the 



