\S2 



INDEX OF ILLUSTRATIONS. 



Pipes, injecting, 156, 157 



Pipette, mode of using, 141 



Pipettes, 140 



Plate glass stage, 97 



Pleurosigma, shell of, 252 



Polariser, 57 



Position of microscope and lamp for 



viewing objects with high powers, 344 

 Positive eye-piece, 2 

 Potato cells, very young, 239 



,, starch, 240, 241 

 POWELL & LEALAND, MESSRS., their 



binocular arrangement for the high 



powers, 1 8 

 ,, ,, ,, microscope 



adapted for all purposes, 13 

 Pressure, arrangement for exerting upon 



the thin glass cover, while the cement 



is drying, 96 

 ,, frame, three views of, 322, 324, 



3 2 S 

 ,, instrument for applying to 



objects under thin glass, 128 



QUEKETT, PROF., his dissecting micro- 

 scope, 38, 39, 40 



RECKLINGHAUSEN'S moist chamber, 232 

 Red and white blood corpuscles, 214 

 Reflected light, examining objects by, 



43 



Reflector, neutral tint glass, 60 

 ,, parabolic, 265 



Retort stand funnel and beaker, for fil- 

 tering, 139 



,, small, to support watch- 



glass, 69 



Rice starch, 241* 



Rings for guiding the diamond in cutting 

 circles of thin glass, 95 



SALMON, MR., his student's microscope, 



10 



Sarcolemma of muscle, 184 

 Saw for cutting thin sections, 81 



,, sawing bone and hard tissues, 



138 

 Scales from moth, 273, 274 



,, hundredths and thousandths of an 



inch magnified in different degrees, 63 

 Scalpel, double edged, 75 

 Scissars, straight, curved, and spring, 



for cutting thin sections, 82, 83, 84 

 Section knife, 76 



SHADBOLT, MR., his whirling table, 91 

 Shade with sulphuric acid, for drying 



objects, 131 

 Shades for protecting objects from dust, 



87 



Shells of rare diatoms, 250, 251, 255 

 SMITH & BECK, MESSRS., their cam- 



phine lamp, 46 

 Snow crystals, double, 294 303 



single, 285298 



Spectrum, arrangement for altering the 



length and breadth of, 320 



,, microscope, cell for examining 



solutions in, 322 



,, ,, eye-piece for, 319 



,, ,, tube for contain- 



ing solutions for examining in the, 326 

 ,, ,, wedge shaped cell 



for examining solution in, 325 

 Spherical aberration, 6 

 Spinal cord, cat, longitudinal section, 220 



,, ,, transverse section, 221 

 Spiral crystals, 306 310 

 Spirit lamp, 71 

 Spring clips, 89, 90 

 Stage and mirror, arrangement for adapt- 



ing to the body of the microscope for 



photographic work, 35 



,, mirror, condenser, &c. , to fit on 



the end of Mr Delves' photographic 



camera, 328 



,, of students' microscope, 9 

 Stanhope lens, 225 

 Starch, rice, 241* 



,, potato, 240, 241 

 Steel disk, II 



Stickleback's ova, 345 354 

 Stop cock and injecting pipes, 155 

 Students' microscope, 10 

 Sulphate of copper, crystals, 306 310 

 ,, magnesia and sulphate of 



zinc crystals of the double salt, 311 



Surface net, 231 



Syringe, arrangement of the pieces of 



leather round the piston to make it 



air-tight, 148 

 ,, for injecting, 151 



Tea leaves, portions of, 275 

 Temporary cartilage and fibrous tissue 



of tendon, 179 

 Test bottles, with capillary orifices, 280, 



281 



,, tubes and drainer, 282 

 Thin glass cover, manner in which it is 



allowed to fall upon the object which 



is being mounted, 142 



,, instrument for measuring 



the thickness of, 343 

 THOMAS, MR., his spiral crystals, 306 



310 

 TOLLES, MR., his arrangement of prisms 



in the binocular microscope, 1 7 

 Trachea? from an insect, 238 

 Transmitted light, arrangement for ex- 



amining by, 42 

 Tripod wire stand, "Jl 



Unstripecl muscle, distribution of nerves 



to, 388 

 Uriniferous tubes of newt's kidney, 219 



VALENTIN'S knife, 78, 79 



