506 
PHILOSOPHICAL SOCIETY OP WASHINGTON. 
Page 
Solarometer, Compensation of vibrations 
and other motions of a vessel at sea for 
the constant level base of the. W. H. 
Beehler. 448 
Solution of the geodetic problem, A new. 
C. H. Kummell. 450 
Some applications of Herzian waves. L. D. 
Bliss. 490 
— characteristics of genus Spirula. W. II. 
Dali. 450 
— relations between man and lower animals. 
W J McGee. 465 
— undeveloped American fibers. C. R. 
Dodge. 451 
Specific gravity of the waters of northeast 
Pacific ocean. A. Lindenkohl. 474 
Spirula, Some characteristics of genus. 
W. H. Dali. 450 
Spofford, A. R.: Obituary notice of J. M. 
Toner. 426, 460 
Star catalogue, Second Washington. J. R. 
Eastman. 485 
— places, Graphic reduction of. E. D. Pres¬ 
ton . 163, 448 
Steel cylinders for gun construction, 
stresses due to interior cooling. R. 
Birnie. 87, 441 
Sternberg, G. M., Election to membership of. 452 
— Pathogenic bacteria. 473 
— Radiographs. 484 
— Some sanitary lessons in the late war. 486 
— Toxins and anti-toxins. 462 
— Twelfth international medical congress... 467 
Stokes, H. N.: Atomic theory from the 
chemical standpoint... 492 
Stratigraphic measurements of geologic 
time. G. K. Gilbert. 437 
Stream lines, Graphical determinations of. 
R. de Saussure. 478 
-in vortex motion, Graphic determina¬ 
tions of. R. de Saussure. 478 
Strother, R. H.: Some observations on a 
problem in dynamics. 491 
Sun spots on different meridians, Distribu¬ 
tion of. F. H. Bigelow. 442 
System of genealogical notation, A. C. K. 
Wead. 464 
Taylor, W. B., Death of.. 438 
— Obituary notice of, by W. J. Rhees... 418, 453 
Temperature of the air, Results of balloon 
ascension in determining. F. H. Bige¬ 
low . 474 
Terminal moraines of the southern coast of 
New England, The submerged. A. Lin¬ 
denkohl . 476 
Terrestrial refraction. W. Eimbeck. 476 
Page 
Thermophone. A. M. Ritchie. 450 
Thompson, G.: Washington monument as a 
sun dial... 463 
Tide, The latitude-variation. A. S. Chris¬ 
tie... 103, 441 
Tides, Analysis and prediction of. R. A. 
Harris. 452 
Tittmann, O. H.: A year’s work of the Inter¬ 
national Bureau of Weights and Meas¬ 
ures .*.’ 467 
— Obituary notice of O. M. Poe. 409, 476 
Toner, J. M., Death of.. 453 
— Obituary notice of, by A. R. Spofford.. 426, 460 
Toxins and anti-toxins. E. A. de Schwei- 
nitz. 473 
-G. M. Sternberg. 462 
Transcontinental are, The. E. D. Preston, 
205, 461 
Transportation and lifting of heavy bodies 
by the ancient engineers. J. E. Wat¬ 
kins. 472 
— in America, A chapter in the early his¬ 
tory of. J. E. Watkins. 452 
Treasurer, Report of, for 1895. 446 
-1896...... 458 
- 1897. 469 
---1898. 480 
- 1899. 495 
Triangles whose angles are 60° or 120° and 
sides whole numbers. A. Martin. 486 
Trigonometry, A new. R. de Saussure. 454 
Tusayan, Prehistoric culture of. J. W. 
Fewkes. 450 
Twelfth International Medical Congress. 
G. M. Sternberg. 467 
Two remarkable semi-diurnal periods. F. 
H. Bigelow. 478 
United States forestry reserves. C. D. Wal¬ 
cott. 472 
University of United States, Proposed. W. 
H. Dali. 478 
Upper atmosphere, Results of recent explo¬ 
rations of. F. H. Bigelow. 493 
Useful bacteria. H. W. Wiley. 473 
Variation of latitude as affected by meteoro¬ 
logical causes. S. Newcomb. 440 
Venezuelan Boundary Commission and its 
work, The. M. Baker. 465 
Von Ihring, Discovery of marine fossils in 
the Pampean formation by. W. H. Dali.. 438 
Walcott, C. D.: A geological trip to New¬ 
foundland. 491 
— geologic reconnaissance in western 
Nevada and eastern California... 454 
