180 ON AN OCCULTATION OF SPICA 



Halifax, N. S., Fredericton, N. B., 



Riviere du Loup, Quebec, 



Three Rivers, Montreal, 



Ottawa City, Prescott, 



Kingston, Cobourg, 



Toronto, Hamilton, 



Port Dalhousie, Port Colborne, 



Port Dover, Windsor, 



Sarnia, Goderich, 



Collingwood, Barrie. 



Availing themselves of the experience of Mr. Alexander, in re- 

 ference to the probable expense of the necessary telegraphic mes- 

 sages, the Committee are led to believe that this would not exceed 

 £200 annually ; and Mr. Alexander suggests, that it would be 

 desirable for the Insurance Companies to insert in policies of 

 Insurance hereafter, a clause obliging captains and owners of ves- 

 sels to make inquiries at stations, from which their vessels are 

 about to sail, whether any storm is raging at the time in the direc- 

 tion of their course ; and that if this was done, and the expenses of 

 such messages or information were paid for by said captains or 

 owners of vessels, it would lessen the expense. 



De Rottenbubg, Convener. 



ON AN OCCULTATION OF SPICA VIRGINIS BY THE 



MOON. 



BY COLONEL BARON DE ROTTENBUBG. 



Mead before the Canadian Institute, Mh April, 1857. 



The following brief remarks upon the Planetary appearance of 

 Stars of the 1st and 2nd magnitudes, on the night of the 12th 

 March, 1857, when taken into consideration along with the ac- 

 companying notes of independent observations, on the occultation of 

 Spica Virginis by the moon, on the morning of the 13th March, will 

 not, I trust, be deemed unworthy of the attention of the members of 

 the Canadian Institute. The first of these does not indeed possess 

 in itself sufficient importance to warrant its forming the subject of 



