PH\ 'SIOL OGICA L PHYSICS. 



Astigmatism, Co v rectiou for, 393 



, irregular, 394 

 Athermancy, 335 

 Athermauous, 462 

 Atmosphere, Homogeneous, 



L eight of, 274 



, Pressure of, 275 



Atmospheric pressure, Effects of, 



278 



- on body, 282 

 Attraction, Electric, 5 



, Magnetic, 91 



Attwood's machine, 503 

 Auricular appendages of ears, their 



action on sound waves, 422 

 Austral, 91 

 Axis of lens, 313 



of mirror, 303 



, Optic, of Iceland spar, 399 



, , of the eye, 310 



, Secondary, 303, 313 



B. A. unit of resistance, 34 

 Bacon, 451 

 Balance, Danish, 497 

 Bands, Absorption, 321, 327 

 Barium and phosphorescence, 



339 

 Barometer, Aneroid, 278 



, Cistern, 277 



, Syphon, 277 



, Wheel, 277 



Bartholinus, 398 



Battery, Becker Muirhead's, 153 



, Group'ng of cells in, 31 



, Leclauche"s medical, 151 



, Mole of joining cells in, 28 



- of galvanic cells, 24 



- of Lev den jars, 12 



, Requirements of, for medic: 1 



purposes, 152 

 -, Stohrer's, 1EO 



Beale's neutral tint reflector, 373 

 Beard and Rockwell's method of 



faradisation, 159 



Peats, Production of, in music, 429 

 Becker M airhead battery, 153 

 Becqiierel's phosphoscope, 339 

 Berjot's amalgamating fluid, 114 

 Bernard's woorara experiment, 75 

 Binocular eye-piece of Hartnack, 

 370 



microscopes, 369 



Biot, 421 



Blood current, Methods of esti- 

 mating velocity of, 230 



pressure, 221 



, Instruments for mea- 

 suring, 227 



Boeck on double refraction by 



muscle, 409 

 Boiling point, 471 

 Boreal, 91 



Bourdon, spring kymograph, 229 

 Boussole, Wiedemann's, 104 

 Boyle's or Marriotte's law, 271 

 Brain ah press, 190 

 Brewster, 357 

 BrowniDg's microspectroscope, 



329 

 Bru eke, behaviour of muscle to 



polarised light, 410 

 Brunton (Lauder), apparatus for 



frog heart, 238 

 Bunsen and dark lines of spec- 



trum, 322 



- cell, 22 



- on diffusion of gases, 290 



Caorniard de la Tour's siren, 4?5 

 Calcium salts, Phosphorescence 



of, 339 

 Caloric, 454; 

 Calorie, 451 

 Calorimeters, 479, 480 

 Calorimetry, 477 

 Camera lucida, Chevalier's, 372 

 -- , Wollaston's, 371 

 Camera obscura, 374 

 Canipani's eye-piece, 362 

 Camphor, Experiments on surface 



tension of, 240 

 Canada balsam, 360, 399, 409 

 Canary glass, 337 

 Canule, Kronecker's, for frog- 



heart, 236 



Capacity, Thermal, 476 

 Capillarity. 241 

 Capillary action in porous 



bodies, 246 



- electrometer, Lippmann, 244 

 -- , McKeudrick, 245 



- tubes, Flow of fluids in, 215 

 Cardinal points, Construction of 



image by, 377 

 -- of system of refractive 



media, 377 

 Cardiograph, 230 

 Cedar-wood oil for immersion lens, 



363 

 Cell, Galvanic (See Element) 



, Diffusion (Graham's), 249 

 Modes of joining, 28, 31 



Celsius' thermometer scale, 

 Central lesion (nervous), Diagno- 



sis of by electricity, 160 

 Centre of figure of mirror, 302 

 - of gravity, 196 



