94 BULLETIN OF THE 



illustrating his remarks by photographs of Noberts' lines, and of 

 the microscopic writing of Mr. Webb, of London. 



Mr. A. Hall read a paper 



ON COMETS AND METEORS. 



{This communication is published in full in '^The Analyst," vol. i. pp. 17-24, 

 Des Moines, Iowa, Feb. 1874.) 



60th Meeting. January 3, 1874. 



The President in the Chair. 



Hon. Peter Parker read a short note on the meteor of Dec. 

 24th, 1873, communicating the details of some observations made 

 by himself. 



Following this communication there were given the experiences 

 of a number of observers who saw this meteor, and, on motion 

 of Dr. Parker, the President appointed a committee to collect 

 further information. 



Mr. J. J. Woodward read a letter from Mr. Ramsey, of Nova 

 Scotia, 



ON the tides of the bay of fundy. 



Mr. G A. Otis gave 



A description op a new spirometer, 

 illustrating his remarks by means of the instrument itself. 



Mr. G. S. Peirce communicated a note 

 ON quaternions, as developed from the general theory of 

 the logic op relatives. 



€lsT Meeting, January IT, 1874. 



The President in the Chair. 

 The President, as chairman of the committee, offered the fol- 

 lowing resolutions, which were adopted, relative to the death of 



Prof. Louis Affassiz : — 



