INDEX. 
617 
Page. 
Riley, C. V.: Some recent entomological 
matters of international concern. 511 
Ritter, W. F. McK.: Perturbations of the 
minor planets. G04 
Rivers, Flood plains of. W J McGee. 565 
Rock gas and related bitumens. 530 
— masses, Rounding of, by external attack. 
G. F. Becker... 500 
Rocks, Coefficient of expansion of some. W. 
Hallock. 556 
Rocky mountains, Peculiar structural feat¬ 
ures in the foot-hill region near Denver. 
G. H. Eldridge .. 247-274 
Russell, I. C.: Subaerial deposits of the arid 
region of North America. 531 
— Obituary notice of R. D. Irving. 478 
Russell, T.: Baudin’s vertical minimum 
thermometer a Marteau. 513 
Saegmuller, G. N.: Drawings of Denver equa¬ 
torial telescope. 607 
Salmon, D. E.: National cattle and meat in¬ 
spection. 569 
Saturn and its ring. A. Hall. 542 
Savings-bank system of Belgium, Postal and 
school. T. Wilson. 570 
Scientific institutions, Origin of our national. 
G. B. Goode... 551 
Screws, Standard. E. G. Fischer. 556 
Searle, G. M., elected member. 552 
Secretaries’ report for 1888. 523 
-1889. 5-14 
-1890. 557 
-1891.... 572 
Series, Summation of certain. R. S. Wood¬ 
ward. 601 
Shrinkage 'cracks, Geometry of. G. K. Gil¬ 
bert . 606 
Shufeldt, R. W.. Indian types of beauty. 567 
Silver chloride, Action of light on. R. Hitch¬ 
cock. 542 
Smillie, T. W., elected member. 565 
Snell, M. M.: Hypnotic experiments of the 
Comte de Maricourt. 518 
Societies, Scientific, Evolution of serials pub¬ 
lished by. W J McGee.. 221, 533 
Solar parallax. W. Harkness. 518 
Solids, Chemical action between. W. Hal¬ 
lock. 518, 542 
— Flow of. W. Hallock. 509 
Square root, Method of extracting. A. Mar¬ 
tin... 606 
Speech, New method of recording and re¬ 
producing articulate. G. W. Littlehales.. 553 
Spencer, J. W.: Drift north of Lake On¬ 
tario. 506 
— Iroquois beach—a chapter in the geologi¬ 
cal history of Lake Ontario. 500 
Page. 
Spherulites, Constitution and origin of. W. 
Cross. 568 
Sphygmograph. R. T. Edes. 517 
Stanley-Brown, J., elected member. 551 
— Bernardinite . 567 
Star-catalogues, Systematic differences of 
proper motions in declination. H. Far- 
quhar..... 593 
Star, Multiple, £ Cancri. A. Hall. 565 
Steamship Savannah, Log of. J. E. Watkins.. 564 
Stokes, H. N., elected member. 566 
Stone, O : Orbit of Hyperion. 598 
Stratigraphic position of the olenellus fauna 
in North America and Europe. 532 
Stream measurements in the western states. 
F. H. Newell.... i . 569 
Tabulating machine, Electrical. H. Holler¬ 
ith. 553 
Target-shooting, Recent discussions of. C. 
H. Kummell. -582 
Taylor, W. B.: A question in mathematical 
nomenclature. 590 
— Obituary notice of Peter Parker. 491 
Tennessee, Cambrian rocks in. C. Curtice.. 516 
Thermometer, Baudin’s vertical minimum 
thermometer a Marteau. 513 
Thompson, G.: Example of work in baromet¬ 
ric hypsometry. 556 
Tide-predicting machine, Modification of 
the Ferrel. J F. Hayford. 608 
Titan, Disputed mass of. G. W. Hill. 598 
Tittmann, O. H., elected member. 502 
— Length of Rater’s pendulum. 552 
Todd, D. P.: Results of the total solar eclipse 
of January 1,1889. 533 
Tornado at Mount Vernon, Ill. H. A. Hazen.. 517 
-Lawrence, July 26, 1890. H. A. Hazen.. 564 
Treasurer’s accounts for 1887, Report of au¬ 
diting committee on. 499 
- 1888, Report of auditing committee on.. 528 
-Report of auditing committee on, for 
1889. 549 
-for 1890, Report of auditing committee 
on. 563 
— report, 1888. 525 
-1889. 546 
-1890 . 559 
-1891. 574 
True, A. C., elected member. 553 
— Status and tendencies of the agricultural 
experiment stations . 566 
True, F. W.: Epitome of the natural history 
of the puma. 554 
Turner, H. W., elected member. 555 
— Extinct lake of pleistocene times in the 
Sierra Nevada. 565 
— Mohawk Lake beds. 385 
