CONTENTS. 
et: ED 
AGE, 
I. Observations of the comet 2 1807, by Nathaniel Bowditch, ran 
FA. Ae . e s * > e ° 1 
II. Observations on the total eclipse of the sun, fune 16, 1806, made at 
Salem, by Nathaniel Bowditch, a.m. ¥.A. As ure oF Fen 
II. Addition to the memoir on _ the og eolibes. of Fune. 6, 1806, dy 
nee “- sat ¥ ‘ é 93 
ly. relies of Napier’s rule for soloing the cases of right-angled: 
spheric trigonometry to several cases of oblique-angled spheric trig- 
onametry, by Nathaniel Bowditch, A.M. F.A.As = - 33 
V. Two tables of the varieties in the first and second cases of oblique 
spherics, inclosea in a letter to the Hon. Fohn Davis, Esq. Recording. 
Secretary of the American ae * Arts and ‘Sciences, by Wil- 
liam Croswell, A.Me . oe Re 8 . . 38- 
VI. Remarks on the construction of the common scale-beam, with a de-- 
scription of the new gold standard beam, invented by the auther, 
Benjamin Dearborn, FiAcAy - ‘ — ‘ ; 40~ 
VIL. A proposal for adjusting a new scale to the mercurial thermometer, 
znclosed in a letter to the late Rev. President Willard, dated August 
1789, by Edward A. Holyoke, M.D. F.AsAs 51- 
VIII. An account of the springs and wells on the peninsula of Boston, with - 
an attempt to explain the manner, in which they are supplied ; ina ~ 
letter tothe Hon. F:hn Davis, Esq. Recording secretary of the Amer- 
tan Academy of Aris and Sciences ; by Fohn Lathrop, DiDe Freche ST 
