
1869.] SENATE—No. 60. 17 
nities from time to time favored, and odd moments of leisure 
rendered the task feasible. 
Soon learning by experience the great difficulty of finding 
many works needful for reference in the prosecution of my 
investigations, and that thus the valuable treasures of the 
Library were not so available as they might else and as they 
ought to be, I devoted myself for some time outside of the 
usual hours of Museum duty, to the dry and thankless task of 
supplying the deficiency. Taking the printed catalogue of De 
Koninck, I designated in the margin, opposite to the title of 
each work, by means of numerals, both the alcove and the shelf 
of every volume, monograph and pamphlet, the permanent place 
of which was already determined. Having done this much, I 
ceased my labors in this direction, as I did not wish to enter 
the alcove and shelf of volumes, the permanent places of which 
in the Library were still unsettled. This catalogue indicates 
the position of about four-fifths of the works belonging to the 
De Koninck Library. 
Since that time, Dr. Staheli has been busily engaged, when 
his other duties would allow, in pushing the arrangement 
further, in marking the number of the alcove and shelf of each 
work, so far as already determined, on the cards of the topical 
catalogue, and at the same time in noting missing volumes and 
all such defects as he might observe in the books composing 
the several departments of the Library. This work being still 
unfinished, a satisfactory statement in regard to the Library as 
a whole is out of the question. I hope, however, to be able, in 
the next annual report, to give a detailed account of its condi- 
tion, of such defects as may then exist, and of many deficien- 
cies supplied by additions made during the year. 
Report on the Collection of Mollusks, by Joun G. ANTHONY. 
At the close of my last year’s labors, I received from the 
Director of the Museum the following letter of instructions :— 
«Thanks to your industry, the arrangement of the shells in the 
Museum is already so far advanced, that I wish henceforth you 
should make the identification of our specimens with original speci- 
mens of the species described by American conchologists the chief 
3 
