PRIZE-QUESTIONS OF SCIENTIFIC SOCIETIES. 429 



SCIENCE — GEOLOaT. 



11. Show the present condition of our knowledge of the Qiiarternary 

 formations situated on the right bank of the Sambre. 



12. Give a precise account of the materials in the Tertiary and Quar- 

 ternary formations of Hainaut which may be made useful in agricul- 

 ture and the arts, specifying their location and their economic applica- 

 tions. 



MEDICINE. 



13. Compare the advantages and inconveniences of the treatment of 

 sick paupers in hospitals of different systems and at their homes. 



AGrKICULTURE AND nOETIGULTURB. 



14. Investigate the natural or physical causes of degeneration in cul- 

 tivated plants. 



15. Investigate and discuss the useful effect of various artificial or 

 chemical manures according to the soil or the system of cultivation. 



16. How does the cuscuta enter into clover 'l By what means may its 

 entrance be prevented? How can it be driven out of an affected plant? 



17. The selection of seeds and the advantageous results whicK it will 

 produce in agriculture and market-gardening. 



Part II. 



QUESTIONS PROPOSED: 



a. By the government: 



18. A systematic review of the works of J. F. Le Poivre, geometri- 

 cian, of Mons. 



19. Give a complete account of the descent and ascent of workmen, 

 in deep mines. Under what conditions should it be conducted in order 

 to insure the lives of the men *? 



b. By the standing committee of the provincial council: 



20. Give a general account of the j)osition, character and treatment 

 of the several iron-ores worked in the province of Hainaut. 



Specify the topographical features which would lead to the discovery 

 of the deposits of iron-ore which may exist in the province of Hainaut 

 and discuss their value. 



Give an account of the cheapest chemical reagents and the simplest 

 manipulations for precipitating all the substances dissolved in the waste- 

 water from sugar-factories, lampblack-factories, chemical works, and 

 dye-houses, so that it wiJl be sufficient to filter the water so treated, in 

 order to obtain it limpid and free from any organic or inorganic sub- 

 stance in solution. 



The prize for each of these subjects is a gold medal. 

 Memoirs should be sent post free before December 31, 1874, directed 

 to the president of the society, 21 rue des Compagnons, at Mons, 



