IV 



CONTENTS. 



Diurnal variation of the atmospheric pressure 



Annual variation of the atmospheric pressure 



Diurnal extremes 



Monthly and annual extremes ..... 



Relation of the atmospheric pressure to the direction of the wind 



TAG E 



101 



104 

 10G 

 106 

 107 



APPENDIX 



Record of the weather kept on board the Yacht "Fox," from July 2, 1857, to September 18, 

 1859; with notes of the specific gravity of sea water, on the state of the ice, appearance 

 of animals, etc. etc. ; on the aurora borealis and atmospheric phenomena . .111 



Tabulation of auroras, with observations and notes, by Dr. David Walker . . 145 



