HYATT: REPORT OF THE CURATOR. 
3 
Dynamical Zoology. 
Considerable work on this collection has been done. The differ¬ 
ent series have been rearranged and general descriptive labels 
prepared by the Curator assisted by Miss Bryant. The large relief 
map of Oahu shows with the aid of colored pins the migrations of 
the species of three of the principal genera of Acliatinellidae. The 
genera are represented by pins with heads of different colors, and 
the species are represented by different numbers and labels on the 
pins. In this way the migrations of the species may be followed 
along the mountain ridges of the island, and the correlation of 
these movements with topography is brought out more clearly than 
by the use of the shells themselves. A valuable and interesting 
series of lamprey eels has been given to this collection by Prof. 
S. H. Gage of Cornell. 
Mineralogy and Geology. 
During the summer Professor Crosby gave considerable time to 
the geological department of the Museum, putting the specimens 
on exhibition in more perfect order, labeling new specimens, etc., 
and he also labeled and arranged, as well as the limited space now 
available would permit, the illustrative specimens and maps pre¬ 
pared for Parts 1 and 2 of the Boston Basin work, and for Part 3 
so far as that was then completed. The same assistant has also 
completed a much needed revision of the general collection of min¬ 
erals and incorporated with the mounted specimens on exhibition 
all of the materials that have been accumulating in the past ten 
years. Professor Crosby has also personally paid for the necessary 
clerical assistance employed in this work. 
During the meeting of the American association for the advance¬ 
ment of science he presented before Section E an outline of the 
history of the Blue Hills complex, and abstracts of this paper 
appeared in the American geologist, in Science, and in the Pro¬ 
ceedings of the American association. He also conducted seven 
parties of geologists to points of local interest, including the Blue 
Hills, and had the satisfaction of learning that his views concerning 
the geology of this exceedingly difficult region were endorsed by 
competent authorities. 
