314 
EASTMAN. 
ever, that these lists contain all the good observations that 
have been made in this country ; in fact, it is quite certain 
that they do not, and one of the principal aims of this paper 
will be attained if this fact attracts sufficient attention to 
bring to light the missing or the unpublished observations. 
In all the catalogues the day of the observation is the 
astronomical day. It was manifestly impracticable to give 
every reference to each object in the five catalogues, and only 
the most important ones have been retained. 
Occasionally references are only given to the first page of 
a paper when it contains several observations of the same 
phenomenon. 
In the reference notes at the bottom of the page the princi¬ 
pal abbreviated notation may be explained as follows: 
A. J. S., XXV 2 , 306, refers to the American Journal of 
Science, Yol. XXV, second series, page 306. 
Trans. A. P. S. refers to the American Philosophical Society. 
Proc. A. P. S. refers to the American Philosophical Society. 
Proc. A. A. A. S. refers to the proceedings of the American 
Association for the Advancement of Science. 
