INDEX. 
615 
Page. 
Kummell, C. H.: Method of continued iden¬ 
tity in its application to the solution of 
equations, and expressing functions in 
highly convergent forms. 607 
— New simple and symmetrical solution of 
the quartie. 609 
— Remarks on some recent discussions of 
target-shooting. 582 
— Short, rough method of computing the 
probable error..-.. 608 
— Warped polyhedra, with special applica¬ 
tion to the road-cutting solid.. 605 
Lake, Extinct, of Pleistocene times in the 
Sierra Nevada. H. W. Turner. 565 
Lake Ontario, Drift north of. J.W. Spencer. 506 
Langley, S. P.: On the observation of sudden 
phenomena... 41, 531 
Lavas, Characteristic, radiate growth in acid. 
W. Cross. 568 
Lefavour, E. B , Death of. 541 
— Obituary notice of, by M. Baker. 488, 552 
Life-saving crews, Work of during the recent 
hurricane. F. Baker. 542 
Lindgren, W., elected member. 555 
Littlehales, G. W., elected member. 543 
— New method of recording and reproduc¬ 
ing articulate speech. 553 
Logarithms, Difference between Napier’s 
and natural. F. Cajori. 603 
— Napier’s. A. Martin. 604 
Longitude, Determination of. W. Eimbeck.. 553 
Mallery, G.: Philosophy and specialties. 
President’s address, 1888. 1 
Martin, A.: Curve of pursuit. 608 
— Error in Barlow’s theory of numbers. 592 
— Method of extracting the square root. 606 
— Napier’s and natural logarithms. 603, 604 
— Probabilities... 602 
— Square numbers whose sum is a square... 580 
— Sum of two biquadrate numbers cannot be 
a biquadrate number. 609 
Marvin, C. F.: New self-recording rain-gauge. 502 
— Wind pressures and the measurement of 
wind velocities... 556 
Mason, O. T.: Study of religions by the 
methods of natural history. 564 
Mathematical nomenclature, A question in. 
W. B. Taylor. 590 
Mathematical Section, Officers for 1888 . 579 
-1889 . 604 
- (pro tem.) 1889... 606 
-for 1890 . 606 
-for 1891. 609 
-Proceedings of, 1888 to 1891. 579-609 
McCammon, J. K,, elected member. 566 
McGee, W J : Evolution of serials published 
by scientific societies. 221,533 
Page. 
McGee, W J: Flood plains of rivers. 565 
— Mississippi bad lands. 567 
— Recent geographic changes on the Atlan¬ 
tic and Gulf coasts... 554 
— Rock gas and related bitumens. 530 
— Southern extension of the Columbian for¬ 
mation. 550 
Members elected in 1888. 523 
-1889. 544 
-1890. 557 
-1891. 572 
Mendenhall, T. C.: New pendulum appara¬ 
tus. 566 
Mensuration, Fundamental theorems in. C. 
H. Kummell. 600 
Metals, Increasing industrial employment 
of rarer. Henry H. Bates . 503 
Meteoric astronomy in America, Progress of. 
J. R. Eastman. 275 
Meteorology in Europe and America. C. 
Abbe. 569 
Metric units of length and mass, Check on 
the relation between. J. F. Hayford. 572 
Merriam, C. H.: Biological survey of the San 
Francisco mountain range of Arizona ... 551 
Mica and chlorite groups. F. W. Clarke.568 
Mindeleff, C., elected member. 531 
MindelefF, V., elected member. 531 
Mineral composition and geological occur¬ 
rence of certain igneous rocks in the 
Yellowstone National Park. J. P. Id- 
dings . 191 
Mississippi bad lands. W J McGee. 567 
Minutes of general meetings, Resolution in 
relation thereto. 530 
Mohawk Lake beds. H. W. Turner. 385 
Mollusca, Pelecypod, Some forms of gill in. 
W. H. Dali. 541 
Money fallacies, President’s address, 1890. 
C. E. D^utton. 359 
Moon, Mass of, from the tides. W. Hark- 
ness...... 555 
Muir glacier of Alaska. H. S. Reid. 555 
Murdoch, J.: Ice-arch formed by horizontal 
pressure. 507 
Muscular sense, Galton’s apparatus for test¬ 
ing. J. S. Billings. 502 
Newcomb, S.: Fundamental concepts of 
physics.... 514 
Newell, F. H.: Stream measurements in the 
western states... 569 
Normal equations, Brief control for general 
solutions of. A. S. Flint. 604 
— positions, Combination of observations 
into. G. W. Hill. 605 
Numbers, Error in Barlow’s theory of. A. 
Martin. 592 
