OF OPTICAL INSTRUMENTS. 117 



1299. Pocket Spectroscope, will show Fraunhofer's lines, and the bright lines of the 



metals, etc., 1 5s. ; with adjustable slit . . . 1 15 



1300. POCKET SPECTEOSCOPE, with achromatic lenses, etc., . . 250 

 1302. adapting ditto to the microscope, extra 12 6 



MOUNTING MATERIALS AND APPARATUS. 



1303. LAWSON'S BINOCULAR DISSECTING MICEOSCOPE, complete . 2 12 



1304. MONOCULAE ..220 



1305. TUENTABLES, for making cells, etc. . . 7 6 and 10 

 1308. AIE PUMP, with plate and receiver complete . . . 18 6 



1307. Wright's Collecting Bottle and Funnel . . . 060 



1308. COLLECTING STICK, with screw bottle and ring, cutting hook, and net ring 



0'15 



1309. SMITH'S MOUNTING INSTEUMENT, for preparing objects free from air bubbles 



10 



1310. MACHINE FOE CUTTING SECTIONS OF WOOD, etc. 12 6 to 220 



1312. BE ASS TABLE AND SPIEIT LAMP, for heating objects in mounting 066 



1313. GLASS STAGE PLATES, various . . . . 1 to 4 6 



1314. GLASS DISSECTING TEOUGHS, various . . . 4 6 to 12 6 



1315. INSTEUMENT FOB CUTTING THIN GLASS CIECLES .140 and 1 10 



1316. INJECTING SYEINGE, with stopcocks . . . 10 to 12 6 



1317. WEITING DIAMONDS ...... from 056 



1318. CUTTING DIAMONDS . . . . . . 15 



1319. CANADA BALSAM, ASPHALT, GOLD SIZE . . per bottle 010 



1320. DEANE'S GELATINE MEDIUM, GLYCEEINE, etc. . . 020 



1322. THIN GLASS, in circles and squares, per oz., 6s. and . . 046 



1323. PLATE GLASS SLIPS, with ground edges, 3 inch, by 1 inch, per gross 12 



1324. FLATTENED CEOWN DITTO . . . . 080 



1325. LABELS for covering objects, per 100 . . . . 020 



1326. GLASS CELLS, square, round, oblong, and with solid bottoms, per doz., 2s. 6d. to 



066 



1327. OBJECT CASES, to hold 3 doz. . . . . 014 



1328. 2 . . . 010 



1329. 1 . . . . . 008 



1330. . . . . 006 



MICROSCOPIC OBJECTS. 



Owing to the difficulty of forming a fairly complete list of these objects, a few only 

 are here enumerated, all interesting new varieties are, however, made up as they 

 appear, and specimens and sections of every kind are prepared to order. 



Geological Microscopic Sections prepared with the utmost care. 



