AT VAN RENSSELAER HARBOR. 



61 



The detail record of the observations of deflections and vibrations at Van 

 Rensselaer Harbor, in May, 1855, and of the vibrations at Hakluyt Island, and 

 near Cape York, in June and July, 1855, could not be found; the results, how- 

 ever, are preserved in Appendix No. XV. of the Narrative (vol. II.), and are here- 

 with subjoined. 



SYNOPSIS OF RESULTS OF VIBRATIONS AND DEFLECTIONS, OBSERVED AT VAN RENSSELAER HARBOK 



DURING THE YEARS 1854 AND '55. 



