IS94-J 281 [Annual Meeting. 
habitats upon the sh.ijies of phxnts lias also been obtained and 
mounted by Miss Martin, hut they have not yet been labeled 
because of the difficulty of preparing comparative labels until 
the whole series of plants is completed. A few additional models 
have also been made and mounted by Miss Martin. 
Geology. 
This depaitmeiit has at last attained a stage of advancement 
which will enable the assistant in charge to devote most of his 
time to investigation. As a matter of fact, this has been the 
case in certain proportion for several years, but during this time 
a considerable amount of maniuil labor i-einained to be d(jne upon 
the collections. Although tiiey will need to be revised and more 
or less extensively changed every few years in order to keep even 
with the progress of science, the necessity for a large amount of 
manual labor will pio])ably not recur while they remain in their 
[(resent rooms. The mineralogy needs revision now, as was 
stated in the last annual report, and this cannot be much longer 
delayed. It is to be hope(l that all the departments of the New 
England series may be ecpially well developed and furnish 
similar opportunities for investigatoi-s who are willing to devote 
themselves to original work. 
Professor Crosby's time during the past year has been devoted 
almost wholly to the prosecution of the systematic study of the 
Boston Basin, and the collection and arrangement of material to 
illustrate the local geology. The first partof this work (Nantasket 
and Cohasset) was ready for distribution early in the autumn. 
The second part (llingham) has been made ready for the printer. 
The third part, which embraces the Blue Hill area, is nearly 
comi)leted. This part is of exceptional interest because it includes 
the principal Cambrian outcrops of eastern Massachusetts, and 
because the Blue Hill range is the dividing wall between the 
Norfolk and Boston Basins. 
"Mr. T. A.Watson has found the characteristic middle Cambrian 
fossil, Paradoxkles harlani, at a ])oint about a mile southeast of 
the original and celebrated locality on Hay ward's Creek ; and has 
kindly presented the specimen, which shows part of the thorax 
of an unusually large individual, to the Society. The lithological 
character of the strata indicates that the slates of the Blue Hill 
