60. 
CONTENTS. 
PLATE 22—( Continued.) 
. 50, 51. Weber’s apparatus for demon- 
strating the laws of magnet- 
ph : x : 
52, 53;.53a. ‘Arago’s Ss apparatus for 
investigating phenomena in 
rotation magnetism, . 
54. Illustrating the intensity of electri- 
city in combined elements, . 
55-58. Clarke’s magneto-electric ma- 
chine, 
Henley’s quadrant electrometer, . 
Apparatus for proving that free 
' electricity is confined to the 
surface of bodies, 
Gold leaf electrometer, 
Buff’s app’s for determining the 
kind of electricity in a body, 
Apparatus to show the separation 
of the combined electricities 
when an electrified popeale is 
brought near, 
Apparatus to show that the con- 
nexion of two similar elec- 
troscopes by an insulated 
conductor will separate 
their electricities, , 
65. Construction of the Bee orncier. 
66, 67. Different windings around the 
electro-magnet, . 
Rotation of the magnet around its 
own axis, . 
The voltaic pile, : 
Illustrating the action of electri- 
cal currents, 
Production of electric light in a 
vacuum, : : 
72. Electric dance, . 
73-75. Eisenlohr’s uehas electric ma- 
chine, 
9. 
61. 
62. 
63. 
64. 
68. 
69. 
70. 
71. 
PLATE 23. 
. 1. Howard’s diagram to elucidate the 
action of the sun’s rays on 
the earth, ; 
2. Illustrating the snow line, 
3. Curvature of the Alpine snow line, 
4-23. Forms of snow crystals, 
24-35. Forms of hailstones, 
36-38. Illustrating the amount of dew Ww 
on trees and herbs, 
39, 40. Ill’g the amount of dew on 
differently inclined surfaces, 
41-43. Ill’g the greatest deposit of 
dew on the highest points of 
an object, . 
44-47. Ill’g the increase of dewdrops, 
48. Ill’g that an object rolled up in a 
ball receives less dew than 
if spread out flat, : 
49-52. Ill’g that gilt paper is bedewed 
only when its unmetallic side 
is in contact with wood, 
53, ab. Zone of dew deposited in the 
cavity of a watch-glass, 
54, Regular deposit of dew around 
wafers on a glass plate, not 
on them, 3 : 
55. Deposit of dew on a window, 
56, 57. Deposit of dew on Pa 
webs, 
PAGE 
317 
355 
338 
354 
325 
322 
321 
323 
323 | Juli, July. 
Jungfrau, Virgo. 
Juni, June. 
Kalteste Temperatur, Coldest temperature. 
Krebs, Cancer. 
324 | Lowe, Leo. 
321 | Mai, May. 
Marz, March. 
346 | Mittlere Temperatur, Medium temperature. 
Schutze, Sagittarius. 
350 | Skorpion, Scorpio. 
331 | Sommer 93 Tage, Summer 93 days. 
Steinbock, Capricornus. 
320 | Stier, Taurus. 
Waage, Libra. 
329 | Wassermann, Aquarius. 
322 | Widder, Aries. 
Winter 93 Tage, Winter 93 days. 
325 | Zwillinge, Gemini. 
PLATE 24. 
Fig. 1. Peculiar crystallization on the win- 
dow of a drug store, . 
360 « 2. Two trees trained on a wall, only 
366 in part lintel to frost, 
366 « 3-6. Ice flowers, 
395 « 7. Formation of fog over rivers, 
397 « 8. Overtopping of trees by fog, 
« 9. Formation of fog over rivers in- 
384 closed by hills, . : 
«  Jll’g the different appearance of clouds 
384 to observers at different 
places, . 
eT Ds He difference of shape of 
384 | clouds according to their 
385 elevation, . 
«12. Illg the difference of currents of 
air at different heights, 
385 « 13-18. Different formations of fog 
near the harbor of root 
(England), ‘ 
385 « 19. Mirage in Lower Egypt, 
« 20, 21. Mirages at sea, 
385 < 99. Theory of mirages, : 
« 23. Mirage on the lake of Geneva, : 
385 PLATE 25. 
383 | Fig. 1-8. Forms of clouds, 
‘« 9. Halo around the sun, . , 
385 “ 10,11. Haloes around the moon, 
Fig. 
Plate 23—(Continued.) 
58. Perpendiculars from the widest 
boughs of a tree marking the 
limits of the formation of 
frost, 
59. Curious forntiation of frost ¢ on the 
chiselled star of a tombstone, 
60, 61. Curious formation of frost on 
leaves, 
62. Illustrating 
winds, , 
63. Ill’g the theory of whirlwinds 
64. Rain gauge, . 
the 
theory of 
GLOSSARY. 
Februar, February. 
Fische, Pisces. 
Frithling 90 Tage, Spring 90 days. 
Heisseste Temperatur, Hottest temperature. 
Herbst 90 Tage, Autumn 90 days. 
Januar, January. 
>? 
391 
386 
386 
386 
387 
387 
387 
390 
390 
372 
387 
403 
404 
405 
405 
389 
407 
408 
