158 Miscellaneous Intelligence. 
( gree cyanoptera), shy general arerreiies on the Falconide, 
he plates, of = h there are five, are faithfully drawn, and well 
ored. Oo. a s also ae 5 med ee the subject of the Fal- 
conide. This sii is to be completed in 30 parts, each part to con 
tain five plates, and the whole to form two large octavo volumes when 
completed. Price $1, eac 
17. Astronomical Observations, made under the direction of M. F. 
Maury, Lieut. U. S. Navy, during the year 1847, at the National Ob 
servatory, Washington. Vol. lll. Published by pa of the 
retary of the Navy. 4to. Washington, 1853.—Besides the tables of 
observations made at the National eeeaninee, this volume contains as 
appendix A, Observations on So “4 pots made at the Oto : 
feet and 88, 821, 520,040, “the viver heii z 76 to 83 fee it deep, and in 
October, from 10 5708, 228, 080 cubic feet to 16,892,279,100, the least 
at the close of the month, and the depth of water 52-2 to 56 feet. The 
silt collected in the river at this time was sent to Eh brenberg, and the 
ppendix on this subject closes with a Report on the species of infu- 
soria it contained. The whole number of forms observed was 88; 4 
out of 44 polygastrica, no new species were detecied excepting a doubt. 
ful Gloconema. The high nts sediment afforded 65 species, the 
low water 54. Ehrenberg ad 
** According to my direct investigation, the microscopic organic liv- 
ing part of the river mud, amo to— 
In the Honues ($—4), corresponding in each second to ae en * 
Nile 7 (4— To Is)» “ 
Mississippi ('5—z'z), sd “6 os Bo 4 a 
“The last is evidently too small and will probably be modified by 
examination of the finer mud out of the current and near the shore 
The Ganges at high water carries in one second 580,000 cubic feet 
of water, the Nile 176,148 cubic feet, and according to the data of 
Marr’s tables, the Mississippi carries on an average 434, 711 cubic feet. 
-18. Field-Book for Railroad Engineers ; containing Formule 
Seicinig out curves, determining Frog Angles, Levelling, Caleulating 
Earthwork, etc., together with Tables of Radii, Ordinates, Deflection 
Long Chords, Magnetic variation, Logarithms, Logarithmic and Natura 
Sines, Tangents, etc. ; a y Joun B. Hencx, A.M., Civil Engineer. ~* 
pp- 12mo, New York, 1854. D. Appleton & Co.—A valuable pocket 
compamion for the practical engineer. It is s neatly printed, and put ”? 
in pocket-book style, is of convenient size, and in its contents just 
a book for the purpose shou ‘ : 
19. Annual Report of the Superintendent of the U. S. Coast suree 
showing the progress of that eark during the year 1852. 174 pp- : 
with numerous charts. Was ie ae 1853.—The Annual Report 
Doel: Diesthhsh sometime talanbia:desuinanie ame annually bY 
improved in of pe 
Prien foe oS we ae ROR 
