68 



Barus — Barus. 



Secular perturbat. arising from the act. of 

 Saturn on Mars, 1906. — Notes on navipat., 

 21 S., 18. — 2 Kapitel in Bd. 4 v. Foundat. 

 library, 50 S. 



Amor. Math. Monthly: A simple method of 

 constructing the normals to a parabola. — A 

 graphical solut. for cubic equat. — Certain 

 properties of the normals to parabolas (ä). 



Astron. .loiirn.: Observ. of asteroids & comet 

 1906 b (.567). — Observ. of minor planets («03). 



— The interrelats. of the asteroid elements 

 (702). — The deelinat. of 182 stars (702). — 

 Decl. of 526 stars (813). — Decl. of 336 stars 

 (830). — The interrelats. of the asteroid ele- 

 ments (836). 



Bull. Clarkson Coli., Tochn.: The normals 

 to conics, 8 S. (1909). — Halley's coraet, 20 S. 

 (10). 



Populär astroii.: The distribut. of the aste- 

 roids (17.5). 



Science: The uses for mathematics (1914). 



Yy Barus, Carl, Dr. phil. 1879 Würz- 

 burg, L.L.D. 1907 Providence, 09 Wor- 

 cester; stud. 1874—76 Columbia-Univ., 

 New York, 76—80 Würzburg; 80—92 

 Physiker, Geolog. Landesuaters., 92 bis 

 93 Prof., MeteoroL, U.S. Wetterwarte, 

 93 — 95 Physiker, Smithsonian Inst., seit 

 1905 Prof., Phys., Brown-Univ., Provi- 

 dence, R.I.; * 1856, Febr. 19, Cincin- 

 nati, Ohio, U.S.A. (Eig. Mitt.) 



Boltzmann-Festschr. : Periodic color distribu- 

 tions in relat. to the Coronas of cloudy con- 

 densat., with a revis. of Coronas, 11 S., 1905. 



Ainnr. .lourn., Silliinan: Apparent hysteresis 

 in torsional magnetostrict. & its relat. to 

 viscosity, 14 S. — Behavior of the phosphorus 

 emanat. in spherical condensers, 5 S. (11, 1901). 



— Effect of temper. & of moisture on the emanat. 

 of phosphorus, & on a diatinct. in the behavior 

 of nuclei & of ions, 20 S. (12, Ol). — Geometrie 

 sequences of the Coronas of cloudy condensat. 



6 on the contrast of axial & coronal colors, 

 14 S. — Possibility of a coUoidal state of gases, 

 3 S. (13, 02). — lonizat. of water & of phos- 

 phorus nuclei, 7 S. — The apertures in Coronas, 

 in relat. to the number of nuclei & their size, 



7 S. — Diffus, of vapor into nucleated air, 5 S. 

 (1.5, 03). — The constants of Coronas, 3 S. (16, 

 03). — The numbers of nuclei produced by 

 shaking differ. liquids & allied results, 4 S. — 

 Direct micrometric measurem. of fog particles, 

 11 S. — The denucleating effect of rotation in 

 case of air stored over water (m. A. E. Watson), 

 3 S. (17, 04). — Alternats, of large & small 

 Coronas observed in case of identical conden- 

 sats. produced in dust-free air saturated with 

 moisture, 8 S. (19, 05). — Groups of efficient 

 nuclei in dust-free air, 4 S. — Relats. of ions 

 & nuclei in dust-free air, 6 S. (20, 05). — 

 CoUoidal nuclei & ions in dust-free air saturated 

 with alcohol vapor, 7 S. — Note on the actual 

 drop of pressure in the fog chamber, 3 S. — 

 New method for standardizing the Coronas of 

 cloudy condensat., 2 S. (22, 06). — Changes of 

 the coUoidal nucleat. of dust-free wet air in the 

 lapse of time, 9 S. — Vapor nucleat. in the 

 lapse of time, 3 S. (23, 07). — Method for the 

 observat. of Coronas, 5 S. — Successive cycles 

 of Coronas, 3 S. (24, 07). — The decay of 

 ionized nuclei in the fog chamber, in the lapse 

 of time, 7 S. — Volcanic activity, 2 S. (24, 07). 



— The axial colors of the steam jet & of Coronas, 



3 S. — The behavior of nuclei of pure water, 4 S. 

 (25, 08). — Standardizat. of the fog chambre 

 by the aid of Thomson's elctron, 4 S. — Thom- 

 son's constant e, found in therms of the decay 

 constant of ions, within the fog chamber, 5 S. 

 (26, 08). — Coronas with mercury light, 9 S. — 

 Absence of polarizat. in artificial fogs, 1 S. 

 (27, 09). — The use of the grating in inter- 

 ferometry, HS. (30, 10). — Adjustment for 

 the plane grating sirailar to Rowland's method 

 for the concave grating (m. M. Barus), HS. — 

 Independence of the Coronas of the thickness of 

 the foglayer, 3S. (31, 11). —The rate of decay 

 of different sizes of nuclei, determined by aid 

 of the Coronas of cloudy condensation. 2 S. — 

 Displacement interferometer adapted for high 

 temperature measurem., adiabatic transformats. 

 of a gas etc., HS. (33, 12). — Interferometry 

 of air carrying electrical current, 6 S. — Com- 

 parison of two screws, 5 S. (34, 12). — Simple 

 screw micrometer, 3 S. — Resolut, of inter- 

 ference fringes, 3 S. (35, 13). — Electrometry 

 with the displacem. interferometer, 22 S. — 

 Applicat. of the displacem. interferometer to 

 the horizontal pendulum, 13 S. (37, 14). — 

 Repuls. of two metallic discs, nearly in contact, 

 12 S. (.39, 15). — The use of compensators, 

 bounded by curved surfaces, in displacement 

 interferometry, 10 S. — On the interferences 

 of crossed spectra & on trains of beating light 

 waves, 13 S. (40, 15). — Further study of the 

 interference of reversed spectra, 21 S. (41, 16). 



— Rotat. of interference fringes in case of 

 non-reversed & of reversed spectra, HS. (42, 

 16). — Methods in reversed & non-reversed 

 spectrum interferometry, 19 & 18 S. (42 & 43, 

 16 & 17). 



Amer. l'hys. Soc. Tlev.: The secular softening 

 of hard steel, 8 S. (29, 1909). — On the probabi- 

 lity of an inherent relat. of the electrical resis- 

 tance & the hardness of steel, 3 S. (30, 10). — 

 The grating interferometer (m. M. Barus), 

 8 S. (31, 10). — The distance betw. two parallel 

 plates, 8 S. — The interferences of the direct 

 spectra of two gratings, 12 S. (7, 16). 



Ann. (1. Physik: D. Schmidtsche Theorie d. 

 Phosphoremanat., 2 S. (11, 1903). — Verteilg. 

 d. Kondensationskerne in staubfr. gesätt. Luft, 

 & üb. ihre Beobachtgsmethoden, 18 S. (24, 07). 



Kolloldzeitschr.: t)b. d. Gang d. Luft durch 

 eine Wasserwand, 4 S. (8, 1911). — D. Sedi- 

 mentat., 3 S. (9, 11). 



\ichols, Physical Review: Temporary set, 

 as associated with magnetostrict., 24 S. (13, 

 1901). 



Philadelphia, Phil. Soc. Proc.: Distributs. of 

 nuclei in dust-free wet air & on methods of 

 observat., 10 S. (46, 1907). — An adjustment 

 for the plane grating similar to Rowland's, HS. 



— The electron method of standardizing the 

 Coronas of cloudy condens., 12 S. — The 

 electrometric measurem. of the voltaic diff., 

 between the two conductors of a condenser, 

 containing a highly ionized medium, 5 S. (48, 

 09). — The transpirat. of air through a partit. 

 of water, 8 S. — EUiptic interference with 

 reflect. grating, 14 S. (50, 11). 



Phil. Mag.: The efficiency of the phigcock 

 fog-chamber, 8 S. (13, 19Ö7). — The inter- 

 ference of the reflected-diffracted & the diffrac- 

 ted-reflected rays of a plane transparent 

 grating & an interferometer (m. M. Barus), 

 14 S. (20, 10). — Interferometry with the aid 

 of a grating, 24 S. (21, 11). — Elliptic & other 

 interference with reflecting gratings, 12 S. 

 (22, 11). — The rectificat. of the spectrum in 

 relat. to the shift of ellipses in displacem. 



