LIX

i86â. Haïr, Account of magnetic observations made in llie vear i858- 1861 inclusive, in British Columbia, Washington territory, and Vancouver island, Phil. Trans. f. i864, 16t. i864. Sabine. A corn pa tison of the most notable disturbances of the magnelic déclination in 1 858 and 1 85q at Kew and at Nertschinsk . etc.. Phil. Trans. f. i864, 997.

1864. Capello et Baleovr Stewart. Résulta of a coniparison of certain

traces produced simultaneously by the self-recording magnelograplis at Kew and at Lisbon . Proceed. of thc Hoy. Soc., XIII , 111. 186». Weneebach . Sur Petrvs Adsigerius et les plus anciennes observations de la déclinaison de l’aiguille aimantée , traduit du hollandais par Hoolberg, Rome, i865.

■ 865. Sidgreaves, Monthly magnetical observations laken at thc college observatory Stonyhurstin i864. Proc, of the Hoy. Soc., XIV, 65.

1865. Volpicelli, Recherches géométriques et physiques sur le magnéto-

mètre biliiaire. Comptes rendus, LXI. 4 18. i865. J. Clere Maxwell el Fleeuing Jenkin . On ibe elementary relation between eleclrical mcasurriiienls. Phil. Mng., (4), XXIX, 436.

1 865. Pling Eari.e Chase , On numerical relations of gravity and magnétisai.

Phil. Mag., (4). XXX, 5a, i85 et 399.

1866. Norton, On molecular physics, terreslrian magnetisui. Phil. Mag.,