Bibliography. 147 
Observations of New and Variable Stars ; Distribution of the Stars in 
space ; Motion of the Sun and Fixed Stars; Resolution of renarkable 
Nebula; History of American Observatories ; Aeebdied ical Expedi- 
tion to Chili ; Astronomical Results of Public Surveys ; Determina- 
tion of Longitude by the Electric Telegrap h; ee segs Publica. 
tions; Manufacture of Telescopes in the United States. 
The design of the “one is to exhibit in a eats bith form the most im- 
sources manta cost him much time and labor. 
€ omission should be noticed. We do not find in this volume any 
allusion to Kirkwood’s celebrated law connecting the rotations of the 
planets with their masses and distances from the sun. In a history of - 
ale mention Astronomy especially, this discovery is entitled to an honor- 
able ment 
_ 4, New Pleeciis of Geometry; by Spa Smite. 200 pp. 8vo 
‘. York, 1850: G. P. Putnam.—The author calls Euclid to picanat 
for asserting that “a Nees is length without breadth” and ‘a ee is 
length and breadth without thickness.” These definitions he declar 
to be false—a verdict that will be pronounce ed upon Mr. Smi th’s ae 
; = Fellow of the Clieinical — London, ec, 288 12. 
American edition. fe ora 1850, Lea & Blanchard. ~Phis vol- 
ume treats i in Part I, of the Urine in all its conditions healthy and 
é &e. 
ie of 5 reat importance to the Eicon with a fullness 
mentioned js given, 
6. Geological Pes ort on the Lake paderior Copper Region, Micht- 
gan; by Cuartes Ti Jackson, M.D. Executive Document, No. 1, 
Bist Cen Ist session. “566 pp. 8vo. Washington, pga 
at Py Dr. Ly levies has been slow in appearing, owing to delays in 
& 
= 
bg 
3 
hn pia per so poor ‘and in a style 
eee the day. There is psa: no reason in 
rane hy.dur. government should not be as well served 
'Y US printers as the publishing houses of New York or Boston. Ve 
