1891.] 
275 
[Annual Meeting 
Boston Basin will be followed by a summary of the whole, a 
correlation of all the more important facts in one connected and 
logical statement of the geological history from the earliest period 
to the present; and this will be accompanied by a general map 
of the entire basin on a scale of one mile to the inch. 
The Museum exhibit will comprise a general relief map or 
model of the Boston Basin on a horizontal scale of 2400 and a 
vertical scale of 600 feet to the inch. This will be colored geo- 
logically and will exhibit approximately the same geologic and 
topographic details as the sectional maps already described. 
Although necessarily the last to be constructed, it will be the 
principal feature and centre-piece of the exhibit. It should 
occupy a table-case in the middle of a room, the wall-cases of 
which should be devoted to the exposition of the geology of the 
different districts or sections of the basin, including: First, 
reproductions in relief, with geological coloring, of the special 
maps, on a horizontal scale of 600 and a vertical scale of 3000 
feet to the inch ; second, pictures and colored sections and 
models, illustrating the structural details ; and, third, complete 
series of typical specimens, showing every phase of form and 
structure in the different districts. 
This exhibit plan is now approximately completed for the 
southeast corner of the Boston Basin, including two natural geo- 
logical divisions-or areas. These are (1) Nantasket [Hull] and 
Oohasset, and (2) Hingham. The two monographs on these 
areas are also, as stated above, in course of publication. They 
will be illustrated by one sectional rmip and four special maps 
(one for Nantasket and three for Hingham), and about 15 pic- 
tures and sections. The three special maps for Hingham are 
already printed. 
Botany. 
In consequence of the unabated generosity of Mr. John Cum- 
mings, the Curator is able to report an important advance in this 
department. 
The final revision and cataloguing of the herbarium has been 
carried through the Endogens by Miss Carter, and her report on 
the entire collection of Phaenogamous or Flowering plants pre- 
served in the herbarium is as follows : 
