AMERICAN EXHIBITS AT THE PARIS EXHIBITION. 761 



Also, Iliad, Book lY, line 440 : 



"These Mars incites, and those Minerva fires 

 Pale Flight around and dreadful Terror reign, 

 And Discord, raging, bathes the purple plain." 



"Flight" is surely an appropriate name for the inner satellite of Mars,. 

 which revolves around its primary more than three times in one of our days. 

 Prof. Hall is this winter engaged in a fall discussion of all the observations 

 on the Mars moons. The results will no doubt be given to the astronomical 

 journals in due time. The major part of his observations on these satellites 

 were published in Ast. Nach., JSTo, 2,161. Our observations on them at this 

 Observatory were published in Ast. JSTach., No. 2,172. From notes accom- 

 panying the observations, it may be seen that on September 7th we were 

 able to see both satellites with the planet iu the field. Usually the planet 

 was shut out of the field ; and on one occasion the inner satellite was meas- 

 ured, when only 7.6" distant from the disc of Mars. 



Morrison Observatory, February 12, 1878. 



AMERICAN EXHIBITS AT THE PARIS EXHIBITION. 



The rapid approach of the time fixed for the opening of the Paris Exhi- 

 bition of 1878, renders it incumbent on us to remind those of our readers 

 who intend to take action in this connection, that they should enter at once 

 upon the preparation of their exhibits, so as to send in applications for 

 space as soon as the commission shall have been appointed by our govern- 

 ment. 



It is of very great importance to this country that our inventors, and 

 manufacturers should be well represented in Paris next year. The French 

 have an idea that this is a country of inventors and mechanics, but are 

 entirely ignorant as to the specialties in which we excel. We should show 

 this to them through the medium now offered us at the expense of both 

 governments. There will undoubtedly in the future be a considerable mar- 

 ket for our productions in Europe. Among the many subjects which should 

 be exhibited in Paris are the following : 



Special processes for the treatment of ores for the extraction of the pre- 

 cious metals ; all kinds of machinery used in mining, milling, and concen- 

 tration of ores, such as hoisting and pumping engines, ventilators, rock 

 drills, ore dressing machinery, smelting, roasting and chloridizing furnaces, 

 hotblast arrangements, Bessemer and Siemens-Martin plant, etc.; wire 

 ropes, rope tramways, iron bridges, in which our engineers excel ; engi- 

 neer's instruments, mineral samples and products, manufacturing and agri- 

 cultural machinery and products. 



Though the time is exceedingly short, it is sufficient, with the character- 

 istic energy of our people, to make our exhibit creditable if suitable meas- 

 ures be immediately undertaken. 



The Paris Exhibition is national and under the entire control of the 

 government. Space, steam power, gas and water, are given free. Goods,. 



