AT VAN RENSSELAER HARBOR. 



53 



June 19, 1854. Experiments of deflections. 



Deflecting magnet A. 67. Deflected magnet I. 7. 



Distance 0.9 feet. 



Magnet. 



North pole. 



Circle reads. 



Mean. 



2u. 



Temp. 



w. 



E. 



W. 



E. 

 E. 

 W. 



268 50' 

 49 



3T6 23 

 22 



373 05 

 04 



267 00 



266 59 



49'. 5 

 22.5 

 04.5 



59.5 



107 33'.0 



106 05.0 



Means 106 49.0 



Experiments of deflections. 



Distance 1.3 feet. 



40.6 

 41.6 

 41.2 

 41.2 



41.1 



Magnet. 



North pole. 



Circle reads. 



Mean. 



2u. 



Temp. 



E. 



W. 



W. 

 E. 

 E. 

 W. 



303 38' 



37 

 334 21 



20 

 334 46 



46 

 304 04 



03 



37'.5 

 20.5 

 46.0 

 03.5 



30 43'.0 



30 42.5 



Means 30 42.7 



41.0 

 43.5 

 43.0 



42.1 



June 19, 1854. 



Experiments of vibrations. (Left to right.) 



No. 



Time.i 



No. 



Time." 



Time of 40 double vibrations. 



10 



11 



33" 



34 



35 



20 s . 1 

 35.3 

 51.0 

 06.5 

 21.9 

 37.3 

 52.8 

 08.3 

 23.8 

 39.3 

 54.9 



Arcs 7 28'. 

 and 3 44 



41 

 42 

 43 

 44 

 45 

 46 

 47 

 48 

 49 

 50 

 51 



Temp. 43 C 



4 h 43'" 38 s . 6 

 54.0 



44 09.5 

 25.0 

 40.4 

 55.9 



45 11.2 

 26.6 

 42.1 

 57.7 



46 13.0 



10 m 18".5 

 18.7 

 18.5 

 J8.5 

 18.5 

 18.6 

 18.4 

 18.3 

 18.3 

 18.4 

 18.1 



10 18.44 



Time of 2 vibrations 15 ". 461. 



Number of chronometer not stated. 



