850 



THE POPULAR SCIENCE MONTHLY. 



the district in which the school is situated, 

 to be introduced in the teaching of geology. 

 The list thus contemplated is published, 

 with brief commentaries pointing out the 

 significance of the several maps, by Henry 

 Holt & Co., in the pamphlet, The Use of 

 Government Maps in Schools. It describes 

 sixty-eight maps. (Price, 30 cents.) 



Mathematical students of the higher 

 branches will understand and appreciate 

 Alexander Macfarlane's setting forth of The 

 Principles of Elliptic and Hyperbolic Analy- 

 sis. In it the fundamental theorem of trigo- 

 nometry is investigated for the sphere, the 

 ellipsoid of revolution, and the general ellip- 

 soid ; then for the equilateral hyperboloid 

 of two sheets, the equilateral hyperboloid 

 of one sheet, and the general hyperboloid. 

 Subsequently, the principles arrived at are 

 applied to find the complete form of other 

 theorems in spherical trigonometry, and to 

 deduce the generalized theorems for the 

 ellipsoid and the hyperboloid. At the end, 

 the analogues of the rotation theorem are 

 deduced. (Author's address, Austin, Texas.) 



A paper by J. F. Kemp in the Contribu- 

 tions from the Geological Department of 

 Columbia College, on Gabbros on the West- 

 ern Shore of Lake Champlain, deals with 

 certain igneous rock in the townships of the 

 district named in which the most important 

 phases of the great igneous body that forms 

 the bulk of the Adirondacks are illustrated 

 and photographic details not previously noted 

 are adduced. The paper also appears in the 

 Bulletin of the Geological Society of America. 



The first number of Tufts College Studies 

 comes without an editor's name, but a foot- 

 note to one of the articles, apparently edi- 

 torial, bears the name of J. S. Kingsley. 

 The number contains three papers viz., The 

 Anterior Cranial Nerves of Pipa, by G. A. 

 Arnold ; Ectodermic Origin of the Cartilages 

 of the Head, by Julian B. Platt ; and The 

 Classification of the Arthropoda, by J. S. 

 Kingsley. (Published at Tufts College, Mass.) 



In Observations on the Geology and 

 Botany of Martha's Vineyard (contributions 

 from the Geological Department of Columbia 

 College) the question is discussed by Arthur 

 Hollickf whether the island has been sub- 

 jected to distortion and elevation by moun- 

 tain-building forces, or whether its existence 

 may be accounted for upon the same hy- 



pothesis by which we may account for the 

 other islands Long and Staten as remains 

 of the glacial morainal fringe. The author's 

 conclusions are in favor of the latter hy- 

 pothesis. The botanical section of the paper 

 gives a list of a hundred and twenty-eight 

 plants found growing on the island. 



The Ore Deposits at Franklin Furnace 

 and Ogdensburg, JV. J., are carefully de- 

 scribed in a paper on that subject by J. F. 

 Kemp, as to their history, location, surround- 

 ing, nature, and working. A list is given of 

 sixty-six minerals occurring in them. The 

 paper is a contribution from the Geological 

 Department of Columbia College. 



The object of the original edition of Mr. 

 H. W. Watson's Treatise on the Kinetic 

 Theory of Gases (Macmillan & Co., $1) was 

 to set forth in a more systematic and in 

 some cases a more simple form the demon- 

 strations of the laws of the theory. In the 

 present (the second) edition substantially 

 the same ground is covered as in that one ; 

 but a more detailed treatment has been 

 adopted, partly on account of historical in- 

 terest, but mainly to avoid some of the diffi- 

 culties experienced by the student in follow- 

 ing out investigations of the great generality 

 required in a more condensed treatment. 



The matter of Elements of Solid Geome- 

 try (Macmillan & Co., $1.60) was used by 

 the author, N. F. Dupuis, in annual courses 

 of lectures to mathematical students, who 

 were much interested. The subject is car- 

 ried somewhat further than is usual in or- 

 dinary text-books of plane and solid geome- 

 try. The work is divided into four parts, 

 which are again subdivided : 1. Dealing 

 with the descriptive properties of lines and 

 planes in space, of the polyhedra, cone, cyl- 

 inder, and sphere. 2. Dealing with areal 

 relations. 3. Stereometry and planimetry ; 

 and 4. The principles of conical or perspec- 

 tive projection. A collection of miscella- 

 neous exercises is presented at the close of 

 the work. The author expresses a high 

 opinion of the value of synthetical solid 

 geometry, in that it exercises the intellectual 

 powers in the development of the theorems, 

 the imagination in the building up of the 

 spatial figures, and the eye and the hand in 

 their representation. 



W7iite j s Manual, in his New Course of 

 Art Instruction for the Fifth- Year Grade, 



