INDEX 



465 



Photo-micrograph, plates for, 244 



with and without an ocular, 230- 



231 



Photo-micrographic camera, 217-220 

 Photo-micrography, 214, 245 



apparatus, 217 



camera for, 217-219 



compared with ordinary photog- 

 raphy, 216 



condenser for, 228-231 



cover-glass correction in, 229 



distinguished from micro-photog- 

 raphy, 215 



experiments with, 225-231 



exposure for, 240 



focusing, 224 



focusing screen, 210-211 



lighting for, 222-228, 240 



mechanical stage in, 220 



microscope for, 220 



micrometer for magnification in, 

 208, 228 



objectives and oculars for, 220-221 



three ways of bringing out details, 

 224 



vertical camera for, 217-218 



with and without oculars, 226 

 Physiologic histology, 340 

 Picric-alcohol, 363 

 Picro-fuchsin, 364 

 Pillar of the microscope, 27 



pin-hole card and fig., 9 

 Pipette, 334 



for eggs and specimens, 334 

 Plane mirror, use of, 54 



plates, dry, isochromatic, pan- 

 chromatic, spectrum, 235-237, 

 244 



Pleochroism, 268 

 Pleurosigma angulatum, 65, 78 

 Point, burning, 284 



eye, 15, 33 



Pointer or indicator ocular, 102, 195 

 Polariscope and lighting for, 264-269 



objects to use for, 266 



objectives for, 266 



Polarized light, ordinary and extraor- 

 dinary ray, 264 



Polarizer and analyzer, 264 

 Polarizing microscope, 264-269 



pedesis or Brownian movement 



with, 119, 268 

 Position of objects or parts, 109- 



no 



Positive oculars, 23 

 Power, of microscope, 131 



of objective, 19, 305 



of ocular, 308 

 Preparation, of reagents, 346-366 



of tissues and organs, 368 

 Preparations, cataloguing and labeling, 



338-339 



cabinet for, 340-345 



marked or masked for projection, 

 199-200 



permanent and temporary, 321, 332 

 Principal focus, n, 284 



optic axis, n, 282, 284 

 Prints, photographic for drawings, etc., 



178, 181, 234 

 Prism, Amici, 247 



camera lucida, 162-166 



comparison in spectroscope, 249 



for drawing with projection, 185 



Nicol of polariscope, 265 

 Projection microscope, 2, 9, 184-189. 

 197-203 



history of, 438-439 



objectives for, 201 



vertical microscope with, 203 



wiring for and fig., 202 

 Pupil of lens, eye-point, 34 

 Pupillary distance in binoculars, 91 



Ramsden's circle, eye-point, 34 



ocular, 24-25 

 Ray filter or color screen, 237 



compensating and contrast, 238 

 Razor for sections and support, 380 

 Reagent board for bottles, 345 

 Reagents for microscopy, 346-367 



preparation of, 346-367 

 Real image, 13, 34, 133-139, i?6 

 Radiation, visible and invisible (fig.), 

 246, 247, 271 



