66 Scientific Intelligence. 
much as two hundred foot pounds per minute per candle light. 
So it might not seem very extravagant to expect that one pound 
eh r_ hour — be b je in a suitable furnace under a 
known, each lamp consuming at the rate of one-fifth of a pound ~ 
of the best illuminating gas per hour; and this would not be half — 
so absurd an expectation as it would ‘have been thre e years ago, 
for some visionary to have e predicted that the talking Phonograph 
would succeed in embalming speech.” 
U. S. Naval Torpedo Station, Newport, R. I, Oct. 30, 1878. 
II. Grotocy AND MINERALOGY. 
1. Report of the Geological Survey of the Fortieth Parallel, 
mae Kine, Geologist in charge: Volume I, Systematic — 
Geology, by Cia LARENCE Kinc, 804 pp. 4to, with 28 plates and 12 — 
analytical geological maps, and accompa anied Ls a geological and — 
topographical atlas. Submitted to the Chief o f Engineers, and — 
published by order of the Secretar , under authority of © 
Congress.—The field work of the jets Survey of the 40th — 
Parallel commenced in 1867, and continued until 1873; the no 7 
mining Siatticks by Mr. a. D, Hague, and ‘of the are by Mr. 5. 4 
Watson; the topography was in the hands +. Gardner ef. 
The area covered by their eae a a colt he country — 
190 miles wide, from north to south, and extending from the — 
meridian 104° west in : neces a little south of west as far 3 — 
longitude 120° west; it partly encloses the 40th Parallel, but neat — 
the spp extremi ity eee a little No the north of the line — 
Of this tract of country Mr. King says, in the opening chapter 0 fo 
his ere “Tt has rarely fallen to the lot of one set of observers — 
to become intimate with so wide a range of horizons and products. 
(Rie within its area a pretty full exposure of the earth's E. 
crust from nearly the greatest known depths up through a see — 
tion of 125,000 feet, ere 8 in all the SEES aes of geologl : 
cal time—a section which has been subjected to a great sequence 
of mechanical violence, ae can hardly fail to become classic for 
its display of the products of peste li | Exploration bas 7 
actually covered an epitome of geological history.” It should be 
added that, at the time when Mr. King’s party took the field, the . 
