* 
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ulties requisite to form the great astronomer,*is seldom foun¢ 
— rs 
plored the nort 
_ progress and was carrying him to the grave. 
‘ ng Mason was truly a man of geni 
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my Sustained by a temper remarkabl she 
was able to fulfil the duties of his appointmer 
latter part of October, it was manifest that his 
reer as an astronomer, he accomplished enough t it 
friends the highest ‘expectations of his future emi 
study to which he had devoted himself. The peculiar asse 
the same individual, comprising as it does so many of the higher 
of genius,—a hand of exquisite delicacy to construct and adjust,—a 
with extraordinary powers of vision to-observe,—an _ intellect 
most profound to follow out all the consequences of astronomical discov- 
‘ery; and that unconquerable enthusiasm which. is regardless of loss of 
rest, of exposure by night, and even of life itself. These qualities were 
severally possessed by Mr. Mason in an unusual degree ;_ but it was their 
striking and harmonious union, which, from the time I first discovered it, 
led me to recognize in him the promise of one probably destined to en- 
large the boundaries of astronomical science.” * * * 
‘This work will, I think be found, on trial, more peculiarly adapted 
the exigencies of young students of practical astronomy, than any similar 
treatise hitherto published ; and I cannot but believe that all who peruse 
-_ it, will unite with me in deploring the untimely fate ofa youth, who has 
given such. signal proofs of his capacity to attain to the highest walks of 
astronomy.” Z 
12. Supplementary Note to Prof. Adams’s Catalogue of the Mollusca 
of Middlebury, Addison Co., Vt. (See pp. 271, 273.) 
Note to Pupa milium.— By the kindness of Prof. Bronn, of Heidel- 
berg, Germany, I have just received specimens of Pupa minutissima, 
Hartm., Rossm., &c. (v. Desh. in Lam. An. sans Vert., Pupa, No. 46,) 
which are very similar in size and form to P. milium, but in other res- 
pects i distinct. ‘Ten specimens weigh .06 gr., or .006 gr. each. 
The remark of Deshayes is ‘ cette espace est certainement l'une des plus 
petites du genre.’ ”’ 
_ Note to Helix striatella, Anth— Prof. Bronn has sent me from Stiria, 
Austria, specimens of this species labelled ‘ H.. ruderata, Studer.’ They 
do not differ in any respect from American specimens, except that one of 
them has a tinge of green. Anthony’s description was published Jan- 
uary, 1840. The description of the European author I have not seen j 
but as the shells were packed by Prof. Bronn only three months later, 
there is scarcely a doubt that the name H. ruderata has the prior ity.” 
Middlebury, February 10, 1841. ; c. B.A 
* 
