owakl, W. von : condenser, " Ultramicroscopc, 'he," H78
1 :  ( Kinoshita and) action of a rays on photo-:raphi<! Illins, " Radioactivity," 585, 580 II.   E. :   sensation curves,   " Eye, The,"  65 ; dative luminosities of Hensatlon primaries, ibid.
10.  07 ; visual dllf uslvity, ibid. 09, 70 ; half-tone irinciple,    " Photographic    Apparatus,"    383 ; ompurison of methods of colour photometry, 'Photometry and Illumination," 4f>8,  " Pokrl-uotry," 475 ; radloiuotry tho essence of colori-netry,   " Spectrophotometry,"   740 ; 9 spoetro-ihotometi'r arrangement, ibid.  745 ;   irradiate ,nd irradiation, ibid. 740 n. 5
ngslmry and) visual dllfusivlty, " Eye. The," '() ; thermopile, " Photometry and Illiunimi-loti," 428
ickeish and) absorbing screen, " Photometry and Humiliation," 421
ion, Sir II. : nickel oxide colour effect, " Glasses.
'olourod," 109 ;  X-ray tnhe, " Radiology," 505
ites and) determination of rotation constants of
ugar,  " Saceharimctry,"  (KID,  (HI I ;   effect of
Humlnant on rotation values, ibid. 003
nini, 0. : feed screw, " Diffraction Gratings, The
rtamifacturo and Testing of," 32 n. 3
•In,  E. :    base  lino measurement with metal
;apo8  or  wires  in catenary, " Surveying  and
Purveying Instruments," 827, 880
>r,   O. :    analysis   of   architectural   acoustics,
' Sound." 003
n, J. : bi-plate, " Light, Interference of," 184 ;
•ofrartomotw,   ibid.   181),   190 ;    compensator,
'bid.  11)0 ;   polarising prism, " Polarised Light
uul Its Applications," 497 ; Babinet compensator
.mod by, ibid. 5(K$
I :   bar-raid Ing tost, " Ophthalmic Optical Ap-
mratus," 281
j. J . II. :  Report, on Ittulintion and the Quantum
'I hear n, " Quantum Theory," 537 ; T/ie Di/nami-
•ul TJiforu of G'a«es, ibid. 537
'A: prism, ".lellctt's I'rism," 149, "Polarimotry,"
170, 478, " Saccluirlmctry," 057 ;  Cornu-Jollott
[ii'lsm, " Polarimotry," 470
11,  L. li. : feed screw, " Diffraction OrathiBS, The Manufacture arid Testing of," 32 n. 2, 83 n. 2 ; wrors In Rowland's tabk1, " Wave-lengths, The Measurement of." 885
nnaen : Manual of I'elrogm-phic methods, " Polar-
ised Light and its Applications," 405, 500 n.
son,  Captain :   permanent magnetism of ship
tlotor.tod   by,   " Navigation   and   Navigational
Instruments,   250
J. : Tihotometer, " Phototnotry and. Illumination,"
126 ;   radioactive nuclei of plcochroic haloa in
mica, " Radioactivity," 585
s, 1). A. : hue and saturation curve, " Eye, The," (13
dotermlnation of eoofMoiit of total radiation, " Radiation," 548, 540 ; result, ibid. 55-1
unor : (Viol and) examination of comparative luminescence, " Luminous Compounds," 194 nati : (Born and) method of obtaining values for specific heat of solids, " Quantum Theory." 534 wr, II. : Ilandbuch der Spectnsoopie, " Diffraction Gratings, Theory," 49, 52, " Npectro-photometry," 738, " Wave - lengths, The Measurement of," 884, 800 ; discrepancies observed by, " Wave-lengths, The Measurement of," 885
,ungc arid) formula for relative index of damp air, " Hpoctroacopcs and Refraetometers" 770 ; formula for relation of Horlon of spectra, "Spectra-scopy, Modern," 784
10 : determination of radiant constant <r, ' Radiation," 551, 552 ; result, ibid. 554 101 u : (Tetrode and) acoustic, vibrations of a gas (imuiUncd, " Quantum Theory," 535 tier : eyepiece, " Eyepieces," 77 'in,   Lord :    gyro   compass,   " Navigation   and .Navigational    Instruments,"    255 ;     azimuth circle, iliirl. 207, 208 ; convectlve equilibrium of air, " Hound," 005 ; temperature gradient in fog, ibid. 000
ihaw, A. : revolving disc method of measuring shutter Hpeeda, " Shutters, Tenting of Photographic," 071
Kcrshaw, ^Messrs. :    projector,   " Klnematograph,"
Kestncr':    raecmic  acid   discovered  by,   " Tartaric
Acid, Optical Rotatory Power of,"'841 Kcttelcr, E.: refmctometer, "Light, Interference of,"
Kienbock: measurement of Intensity of X-rays, " Radiolofiy," 009, 010
Kimball:  " Diffraction Gratings, Theory," 41
King, A. S. : concave grating mounting, " Diffraction Uratings, Theory," 50
Kingsbury: (Ives and) visual diffusivity, " Eye, The" 70 ; thermopile, " Photometry and Illumination," 4
Klnoshlta (Ikcuti and) action of a rays on photographic lllms, " Radioactivity," 585, 580
Kipping: optical rotation in organic compounds, " Optical Rotation and the Polarimcter," 349
Kirchholf,  G.:    law  of emission  and  absorption,
" Radiation Theory," 508
(Bunson and) spectroscopic research of, " Spectro-scopy, Modern," 778; explanation of Fraun-hofor lines, " Wave-lengths, The Measurement of," 882
Kjeldahl: yeast used as inverting agent by, " Sac-charlmctry," 605
Klocman: (Bragg and) range of a rays, " Radioactivity," 577; stopping power of an atom, ibid. 578
Klein : (Rominerfclrt and) theory of gyro compass, " Navigation and Navigational Instruments," 257
Kllngclfuss : qualimeter, " Radiology," 608
Kriibbs, G. H.: formulas for base measurement by long steel tapes, " Surveying and Surveying Instruments." 830
Snipping: (Friedrich, Laue, and) radiographic analysis of crystal structure, " Crystallography,"
Knox-Shaw : (Ball and) tables of sidereal time and azimuths, " Surveying and Surveying Instruments," 810
Koch: speed of sound and atmospheric pressure, " Sound," 080 n. 3
Kodak, Ltd.: roll Him cameras, " Photographic Apparatus," 394
Koonig : sensation curves, " Eye, The," 65
Kohlrausch: experiment on judgment of pitch, " Sound," 728, 729
Kcinig: adjusting apparatus for range-finders, " Range-flndor, Short-base," 649, 053 ; quantitative treatment of Rayleigh disc, " Sound," 727 (Martens and) spectrophotometcr, " Spectro-photometry," 743, 744, 745, 740. 747, 748, 753 ; relative accuracy of, ibid. 753, 754
Kopp : molecular volume, " Crystallography," 19
Kovarlk : method of counting a particles, " Radioactivity," 579, 580
(Wilson and) scattered radiation and velocity £ rays, " Radioactivity," 583
Krios, von : Duplicitats theory, "Eye, The," 68
Zrlgar-Menzel, F.: (Raps and) methods of recording ' motions of parts of musical instruments,'' Sound,'' 730
Kriigcr : theory of specific heat of gases, " Quantum Theory," 535
Krllss. H.: absorbing screen, " Photometry and Illumination." 421; flicker photometer discs, ibid. 455; Kolorimetrie untl quantitative SpeJctral-anali/se, " Spcctrophotomctry," 738 ; spectrometer, ibid. 744; intensity curves, " Spectroscopes and Refraetometers," 771
Kurlbttiim : bolometric determination of constant of total radiation, " Radiation," 544, 545 ; result, ibid. 554 (Lummer and) platinum standard, " Photometry
and Illumination," 415
(Rubens and) isochromatic measurements of spectral radiation constant, " Radiation," 555
Kuster: pneumatic player, " Piano-player, The," 470
Lambert: law, " Light Filters," 170
Lampa: measurements by, " Wave-lengths, The Measurement of," 894
Landolt: ophtbalmodynamometer, " Ophthalmic Optical Apparatus," 282 ; method of pupilo-metry, ibid. 282 ; perimeter, ibid. 282; polari-mctcr, " Polarimctry," 475, 480 ; Schmidt and