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invented by Mr. Charles E. Brush, of that 

 city. The results were in the highest degree 

 satisfactory, as will be seen from the follow- 

 ing account of the experiment which we con- 

 dense from the Cleveland Herald: 



The machine is capable of giving a light 

 of 12,000 caudle-power, the electric fluid 

 being distributed to four electric lamps, each 

 having the power of three thousand candles. 

 The exhibition was given in the establish- 

 ment of the Union Steel Screw Company, 

 where two of the lamps were placed on the 

 third and two on the fourth floor of the im- 

 mense building. The illumination was per- 

 fect. The rooms were flooded with a pure 

 white light like the light of the sun, and it 

 streamed out at all the windows, illuminat- 

 ing houses and streets for a long distance 

 in every direction. The light was very uni- 

 form and steady, free from the flickering 

 that used to be an accompaniment of elec- 

 tric light, and, considering the enormous 

 illuminating power, the light was unexpect- 

 edly soft and endurable to the eyes. An 

 opportunity was afforded to test the char- 

 acter and whiteness of the light. Worsteds, 

 scarfs, afghans, etc., of brilliant shades were 

 hanging against the wall at one side of the 

 room, and it was noticed that the colors 

 were brought out as clearly as by the full 

 light of the sun. Estimates were made as 

 to the amount that the light furnished by 

 this apparatus would cost, if used by the 

 Screw Company as it was used on the even- 

 ing of the exhibition, and it was ascer- 

 tained that the total cost of the whole light 

 from the four lamps, including the items of 

 consumption of carbon in the lamps, inter- 

 est on the investment, and wear and tear, 

 would not exceed thirty cents per hour. The 

 light produced was photometrically equal 

 to eight hundred gas-burners, burning five 

 feet of gas per hour each. This amount of 

 gas would cost eight dollars per hour in 

 Cleveland. 



Ascent of Mount Ararat. In September, 

 18*70, Mr. J. Bryce made the ascent of the 

 greater peak of Mount Ararat, and at a recent 

 meeting of the London Geographical Society 

 gave an account of the feat. Mount Ararat 

 is situated nearly in the centre of the region 

 known as Armenia a territory divided be- 

 tween three empires, and lying round the 



sources and upper courses of the A raxes, 

 Euphrates, and Tigris. The mass of Ararat 

 is about twenty-five miles long from north- 

 west to southeast, and from twelve to four- 

 teen miles wide. It consists of two peaks 

 joined together by a sort of neck. The 

 greater peak, Great Ararat, rises 17,000 feet 

 above sea-level, and the lesser peak, Little 

 Ararat, 12,800 feet ; both are of volcanic ori- 

 gin. Mr. Bryce began the ascent from a small 

 Tartar village on the northeastern face of 

 Great Ararat, being accompanied by a friend 

 and two guides, a Cossack and a Kurd. At 

 the height of about 11,500 feet Mr. Bryce's 

 friend abandoned the attempt to reach the 

 summit. The remainder of the climb had 

 to be made over beds of snow, and over bare, 

 loose, broken stones ; the latter course Mr. 

 Bryce chose. At the height of 15,000 feet 

 the Cossack and the Kurd refused to go any 

 farther, so he was compelled to journey 

 alone. The last part of the ascent was up- 

 on a slope of rotten rocks, rather soft and 

 sulphurous, which crumbled under his feet, 

 adding greatly to his fatigue. Near the top 

 of this slope Mr. Bryce could just discern 

 the edges of the plateau of snow, and hang- 

 ing on this a curtain of clouds. After as- 

 cending into these clouds two strong blasts 

 of wind swept them away, and then a won- 

 derfully grand and extensive view lay before 

 him. The Caucasus could be seen to the 

 north, distant about 250 miles ; the highest 

 ranges of mountains round Erzeroum to the 

 west ; the mountains of Assyria, and South 

 Kurdistan, the mountains in the direction of 

 Nineveh, and the valley in the direction of the 

 Zab, to the south ; to the east, the enormous 

 mountain-masses in Persia, and north as far 

 as the Caspian. But in his fondest anticipa- 

 tion Mr. Bryce was doomed to a sad disap- 

 pointment : he could find no fragment of 

 Noah's ark ! 



Prevention of Contagions Diseases. Two 



modes of fortifying the system against the 

 attacks of zymotic disease are pointed out by 

 Dr. E. M. Hunt, in the Medical Record, viz. : 

 topical application of substances inimical to 

 the development of contagia; and, secondly, 

 the introduction into the blood of substances 

 which shall prevent fermentive, defibrinizing 

 or destructive processes. On the hypothesis 

 that conlagium vivum is introduced into the 



