29. A divided circle with two pointers, on brass foot. 239
30. A mirror stereoscope, after Wheatstone. 624
31. A prism stereoscope, after Brewster. 625
32. A cube of Icelandic crystal.
33. A large piece of Icelandic crystal, unpolished. 256
34. A chromatrope. 628
35. A transparent Newtonian colour disc. 629
36. Some lens-holders and various screens for optical experiments.
37. A Chinese [^Japanese] metal mirror with handle in
lacquered box. 623
38. Two flat mirrors mounted for the double reflexion.
39. A magic lantern.
40. An apparatus for the focal lines ibrandliinenl. 238
41. An apparatus for the persistence of vision.
Case F.
1. Three compasses in mahogany boxes. 86, 88, 89
2. A dip needle. 90
3. A theodolite. 266
4. A sextant in brass. 279
5. An octant. 278
6. A large flat scale with old measures. 345
An accurately divided brass rule with old measures. 358
8. A Bohnenberger apparatus. 376
9. An apparatus of Fessel. 378
10. An armillary sphere on a stand. 94
11. Five planetaria with gearwork. 95-99
12. A complete apparatus for making apparent the sound vibrations
after Lissajous. 517
13. A heliostat. 245, 246
14. A terrestrial globe provided with a wide brass horizon, adjustable.
91
Case F:
1. A large air-pump with turn-cocks and glass receiver plate. 137
2., A double pressure pump. 139
3. Three mounted receivers belonging to the pressure pump.
138, 140b
4. A cylindrical and a round pressure fountains. 173, 174
5. A large model of all sorts of suction and pressure water
pumps with a number of movable pieces in a chest. 120
6. A model of a suction and pressure pump with rotating
crank. 118, 119
b | Twenty large and small glass bell-jars and cylinders for use
with the air-pump. 140a, 172, 180
8. Two large Magdeburg hemispheres. 162
9. A siphon with reservoir Quchtreservoirl. 106
10. A small mill with vanes for the influx of the air. 136
11. A so-called lung-flask and a smaller. 176, 175
12. A glass ring for the bladder. 178
i m A small fountain. 171
14. Eight glass siphons, one on a tripod. 108, 111, 112, 114,
115, 117
15. A large tantalus beaker and a ditto smaller with silver figure.
110, 109
16. A bell-jar with so-called Baroscope after Amonton.
i i | i Three plarc^ with stuffing-boxes, one with flaps for the fall
in the vacuum. 168
18. A ditto with electromagnets, following L's arrangement.
19. Three brass troughs.
20. A large manometer on brass foot.
21. Two spoons for scooping carbonic acid and hydrogen.
22. A caoutchouc bladder with turn-cock.
23. A glass balloon with small bell for the sound in the vacuum.
169
24. A clockwork for the sound in a vacuum. 501
25. A magnetic apparatus for the same after L's arrangement.
502
26. A little bell for the sound in gases. 503
2 Ì : ^ Two wooden and a cardboard organ pipe.
28. A small box with preparations of the auditory organ and a
large auricle in gypsum. 483, 482
29. An apparatus with three tuning-forks for interference.
30. A tuning-fork with a tuned small flask.