542 



THE POPULAR SCIENCE MONTHLY. 



wood engraving, of many men of note con- 

 nected with telegraphy in America, whether 

 as inventors or as administrators. 



Walks in London. By Augustus J. C. 

 Hare. 2 vols, in one. New York : Rout- 

 ledge & Sons. 1878. Pp. 1,020. 



" In these volumes," writes the author 

 in the preface, " I believe all the objects of 

 interest in London are described consecu- 

 tively as they may be visited in excursions, 

 taking Cliaring Cross as a center. The first 

 volume is chiefly devoted to the city, the 

 second to the West End and Westminster. 

 . . . While endeavoring to make ' Walks in 

 London ' something more interesting than a 

 •guide-book, I have tried, especially in West- 

 minster Abbey and the picture-galleries, to 

 give such details as may suggest new lines 

 of inquiry to those who care to linger and 

 investigate." 



Science Observer (Monthly). Volume IL, 

 No. 3. Boston : Amateur Scientific So- 

 ciety. Post- Office Box 2,725. Pp.8. 

 Subscription, 50 cents per year. 



We observe with pleasure the continued 

 success of this very meritorious little peri- 

 odical. It appears to be particularly strong 

 in the department of astronomy. The pres- 

 ent number, for instance, has an elaborate 

 article on " The Tides." This is the " lead- 

 ing article " of the number. The minor 

 articles are on " The August Lyriads," 

 "Mira Ceti," "Sun Spots," "The Intra- 

 Mercurial Planet " ; finally, we have " Ephe- 

 merides of Variable Stars." 



Survey of the Northern and Northwest- 

 ern Lakes and the Mississippi River, 

 in charge of C. B. Comstock, Major of 

 Engineers, and II. M. Adams, Captain 

 of Engineers. With Charts. Washing- 

 ton : Government Priniiug-Oifice. 1877. 

 Pp. 100, 



The work of this survey, during the year 

 ending June 1, 1877, may be thus summed 

 up : On Lake Erie the triangulation has 

 been carried from Westfield, New York, to 

 near Painesville, Ohio ; the topography and 

 hydrography have been carried from Ash- 

 tabula, Ohio, to Vermilion, Ohio ; the lati- 

 tudes and longitudes of sundry points have 

 been determined ; a line of levels has been I 

 run between Escanaba and Marquette, to 

 determine the difference of levels between 



Lakes Michigan and Superior ; four charts 

 of Lake Michigan, one of the St. Lawrence, 

 and one of the Detroit River have been 

 completed ; the survey of the Mississippi 

 has been carried from five miles above 

 Cairo to a point eight miles above Colum- 

 bus, Kentucky. 



Geoiogical and Natural History Survey 

 OF Minnesota (1877). Whh Maps. 

 MinneapoUs : Johnson, Smith & HaiTi- 

 son print. Pp. 225. 



The first work undertaken by the officers 

 connected with the Minnesota survey in the 

 year 1877 was an attempt, and a successful 

 one, to ascertain the causes of the foulness 

 of the water in wells throughout the Red 

 River Valley. It appears that, owing to the 

 scarcity of building-stone in the valley, pine 

 planks are used for curbing the wells, and 

 to this cause is to be attributed the bad 

 quality of the water, which in itself contains 

 nothing that is unwholesome. Professor 

 Winchell, State Geologist, with his asso- 

 ciates, next examined localities in Wright 

 County, where coal had been supposed to 

 exist. At no point were Cretaceous beds 

 seen in situ, though possibly they might be 

 struck below the drift, in sinking a shaft. 

 Preliminary reconnaissances were made into 

 the counties of Goodhue and Morrison. The 

 surveys of the following counties were com- 

 pleted, viz., Hennepin, Rock, Pipestone, 

 and Rice. 



The Minerals, Ores, Rocks, and Fossils 

 IN the Pacific Coast Exhibit at the 

 Paris Exposition of 1878. San Fran- 

 cisco : Bosqui & Co. print. 1878. Pp. 

 99. 



We have here a catalogue of the collec- 

 tion named above, preceded by an Introduc- 

 tion on the mineral resources of the Pacific 

 States. 



The Indian Question. Address by Gen- 

 eral Pope. Pp. 31. 



The author proposes to locate reserva- 

 tions for Indians far in the rear of advan- 

 cing emigration, in populous, well-ordered 

 districts, where no hostility to the Indian is 

 felt. Thus surrounded by good influences, 

 the Indian might, the author thinks, become 

 civilized, and perhaps eventually absorbed 

 by the superior race. 



