EUROPE. 



281 



yield about 400,000 gallons each per diem, and 

 make up easily the 9 million gallons, or 26f 

 gallons per head of the population, at present 

 required. The water is pumped by powerful 

 engines into reservoirs in different parts of 

 the city, one 160, one 315, and one 512 feet 

 above the filtering well ; in the park, on the 

 opposite side of the river, is a fourth reservoir. 

 The deepest artesian well in the world is 

 being sunk by Zsigmondy, at Pesth. He has 

 already reached the depth of 951 metres, or 

 about 3,000 feet, which is 404 metres deeper 

 than the well at Paris. The boring at that 



depth is in dolomite. The water obtained is 

 perfectly clear, and rich in sulphur and alkali, 

 and shows, when it reaches the surface, a tem- 

 perature of 57.6 Reaumur ; the jet amounts 

 to 693,930 litres per diem. The pressure of the 

 upward-streaming water is made by an ingeni- 

 ous appliance, invented by Bela Zsigmondy, 

 to assist in the boring operations. The ther- 

 mometer shows a temperature of 65 at the 

 reported depth. 



EUROPE. The area and population of the 

 states of Europe, arranged according to the 

 density of population, were as follows in 1877 : 



The following tables exhibit the different 

 states of Europe, arranged according to their 

 area and population, showing, at the same 

 time, what per cent, the total population and 

 area of each country are of those of Europe : 



ACCCORDING TO AREA. 



ACCORDING TO POPULATION. 



The European Conference which had met in 

 Constantinople in December, 1876, for the 

 peaceable solution of the Eastern complication, 



* Without dependencies. 



