16 



PROFESSOR FORBES'S EXPERIMENTS 



Table VII. 



Place. 



Particular Situation. 



Latitude, 



N. 



Long, 

 from Paris. 



Height, 

 Eng. feet 



Observed Intensity; Paris = 1.000. 



Needle, No. 1. 



Mean. 



Flat Needle. 



Mean. 



Edinburgh, . . 

 Edinburgh, 

 Edinburgh, . . 



Brussels, . . . 



Spa, 



Konigstuhl, near 



Heidelberg, 

 Heidelberg, . . 

 Bruhl, .... 



Laach, 



Mont Saleve, near 



Geneva, . . . 

 Geneva, . . . . 

 Geneva, . . . . 



Mont Breven, . . 



Chamounj, . . 



Jardin, . . . . 

 Col des Fours, 



{ 



Aoste, . . . 



St Bernard, . 



Martigny, 

 Interlaken, 



Schmadribach, 



Grindelwald, 

 Grindelwald, 



Meyringen, . 

 Grimsel, . . 



Miinster (Vallais), -I 



Gemmi, .... 

 Friitigen (Kanderthal), 

 Faulhorn, . . . 



Engelbcrg, . . -! 



Surennes, .... 

 Klus (near Altorf), 

 St Gothard, . . . 

 Locarno, .... 

 Orta (on Lake Orta), 

 Bellaogio(Lake Como,) 



Reichenau, . . 



Wallenstadt, 



Lucerne, . . . 



Rigi-Culm, 

 Paris Observatory, 

 Paris Observatory, 

 Pic de Bergons, near 



Luz, Hautes Pyre 



nees, . . 

 Pic de Bergons, 



> 

 ;ar"i 



'7 



Greenhill, field, June 1832, .... 



„„„_ garden. May 1833, . . . 



field, S. of garden. May 1835, 



Enclosure of Observatory, 20 yards from \ 



NW. corner of the building, . . J 

 South face of cla.y-slate hill, close to\ 



the town, on the NW. side, . . J 



Summit of the hill, 



Prof. Leonhard's garden, on a stone table. 

 In a quarry near the bank of the Rhine, 



NW. side of the lake, 



Summit of the Grand Saleve, . . , 



Botanic Garden, August 1832, . . , 

 November 18.32, . . 



Summit, 



On the farther side of the Arve from 

 the village, 



At the " Pierre d'Herschel," . . . 



Close to the snow, in a cleft of rock. 



In a summer-house (built entirely of 

 wood, and without nails) in the gar 

 den of the inn, 



Between the Hospice and the lake, 



1 



Garden of the inn, 



On the bank of the Aar 



Near the upper cascade (at the head ) 

 of the valley of Lauterbrunnen), J 

 Behind the inn; 14th Sept. 1832, . . 

 At the lower glacier; 23d Sept. 1832, 



Near the church, 



Near the Hospice, 



On the bank of the stream, just above 1 



the town, / 



Within shelter-house near the summit, 



A little below the town, 



Summit, to the W. of the house, . . 



•1 



At the side of the road before reachin 

 the town, 



Summit of the Pass, .... 



On a muir, 



At the summit-level N. of the Hospice, 



In the bed of the torrent below the Convent, 



At the side of the road, above the town. 



On the shore N. of the town, . . . 



On the bank of the Upper Rhine, a little 1 

 above the junction of the streams, J 



Near the lake ; S. end, 



In a wood-yard on the E. side of the) 

 lake, near the bridge, . . . . j 



To the N. of the inn, 



M. Arago's Magnetic Cabinet, June 1833, 



June 1886, 



Summit, 18th July 1835, 

 21st July 1835, 



55 67 

 65 57 

 55 57 



50 51 



49 25 

 49 26 



60 25 



46 6 



46 12 

 46 12 



45 56 



45 55 



45 55 

 45 45 



45 44 



46 52 



46 6 

 46 42 



46 31 



46 88 

 46 38 

 46 44 

 46 34 



46 30 



46 25 

 46 36 

 46 40 



46 49 



46 49 

 46 49 

 46 34 

 46 10 



45 47 



46 00 



46 49 



47 7 

 47 03 



47 03 



48 50 

 48 50 



42 50 



42 60 



5 33 W. 



6 33 

 6 33 



2 2E. 



6 23 

 6 12 



4 56 

 3 51 



3 49 



3 49 



4 30 



4 32 



4 39 

 4 25 



6 00 



4 60 



4 45 



5 32 



5 33 



5 42 

 5 42 

 5 62 



5 59 



6 57 



5 17 



6 18 



5 40 



6 7 



6 13 

 6 19 

 6 14 

 6 28 

 6 4 



6 56 



7 4 

 7 00 



5 59 



6 09 

 00 

 00 



2 18 W. 



2 18 



300 

 300 

 300 



300 



1700 

 300 



1000 



4500 



1300 

 1300 ( 



8400 



3400 



9000 

 8900 



1900 



8100 



1600 

 1900 



5200 



3700 

 3400 

 2100 

 6200 



4200 



7500 

 2800 

 8900 



3400 



7700 



1600 



7100 



700 



1000.? 



700 



2000 



1400 



1500 



5900 

 200 

 200 



6900/ 



6900/ 



.840 



.841 .842 



.839 .839 



.959 .960 



.981 .977 



1.018 1.018 



1.017 

 .987 

 .985 

 .982 



1.078 



1.078 

 1.075 

 1.074 

 1.089 



.986 



.985 

 1.077 



1.078 

 1.073 



1.085 1.086 



1.084 

 1.088 



1.096 



1.082 



1.083 

 1.068 



1.077 1.081 



1.076 



1.074 

 1.072 

 1.073 

 1.074 



1.076 



1.080 1.077 



1.079 1.078 

 1.074 1.073 



1.070 1.071 



1.068 1.073 



1.072 



1.071 

 1.070 



1.084 

 1.093 

 1.096 



1.071 

 1.072 

 1.072 



1.092 

 1.094 



1.075 1.077 

 1.070 1.068 

 1.068 



1.062 



1.000 1.000 



1.001 1.000 



1.116 1.115 

 1.113 



1.117 1.113 

 1.117 



} 



.840 



.839 



.840 .840 



.840 .842 



.960 .966 



.979, 



1.018 1.012 

 1.017 1015 



} 



.986 



.984 



1.077 



1.076 



1.089 



1.085 I 



1.084 1.082 

 1.088 



.984 .980 



1.073 



1.076 

 1.067 1.066 



1-095 

 1.077 1.075 



1.096 



1.082 



1.083 

 1.068 



1.079 



1.075 

 1.072 

 1.076 

 1.074 



1.078 



1.078 

 1.073 



1.071 



1.071 



1.071 

 1.072 

 1.071 

 1.084 

 1.092 

 1.095 



1.076 



1.069 



1.068 



1.062 



1.000 



-1.115 



1.089 



1.072 1.071 

 1.070 



1.075 1.075 



1.061 1.063 



1.069 



1.071 

 1.065 1.064 



1.062 1.066 

 1.064 



1.068 



1.069 



1.062 1.060 

 1.059 



1.062 

 1.061 

 1.062 

 1.079 



1.090 



1.063 

 1.058 



1.0001 

 1.000 J 



1.112 



1.111 1.111 



} 



.840 

 .966 



} 



1.012 



1.016 



.982 



1.073 

 ■ 1.071 



1.095 

 1.076 

 1.082 



1.089 



- 1.071 



1.076 

 1.062 



1.069 



1.071 

 1.064 



1.064 



1.068 

 1.069 



1.060 



1.062 

 1.061 

 1.062 

 1.079 



1.090 



1.063 

 1.058 



1.000 

 1.111 



