304 Miscellaneous Intelligence. 
9. New Theorems, Tables, and gee for the Computation of 
Earth work ; by Jou s Warwer, A.M., Mining and Mechanical Engi- 
neer; Author of Studies j in Organic Morphole = 8vo. J. B. Lippincott 
ng 
to the public his new theorems, &c., has at the same time farnished stu- 
von of engineering, and practical — with a systematic treatise 
on the computation of earth-work. It is divided into two parts. in 
Part I, styled “A Practical Treatise,” the processes of computation, for 
the various c occur, are minutely detailed and exemplified 
Two sera! methods of computation are given hep se Tranaterls 
Ground-Slopes,” and by “ Centre and Side Heights.” The computations 
are greatly facilitated ‘by the use of a new set of tables constructed by 
the author. Scales are also furnished, to expedite calculations for approx- 
imate determinations. The rules and tables are derived from for mule 
Where ike cross-section of the ground is level, the extended cabled 
McNeil and others, afford much the readiest means of determining the 
content of ee ae provided the assumed width o f road-bed an 
side-slopes a > be found fa the tables. But in all cases of pcan 
cutting or fling, the methods and tables of the present work will mate- 
rially facilitate the computations, Still it must be admitted that there 
is an air of 3 wed in the about the detail of the preparation of the ele- 
n 
cesses of calculation would be more readily apprehended and more al 
retained and applied. A distinct theoretical conception frees ee 
considerable degree, from the necessity of burthening the memory 
formal rules, and ensures greater eaitdiiiky in computations. 
Proc. Bostox Soo. Nar. Hisr. (continued from p. 160, vol. a 1861. Vol vit 
the 
SEPTEMBER, 169, New species of Microscopical 
River Para; Loring W. Bailes? Oambridge Mase —169, Sres of Gol Gold and Silver 
from Sierra Nevada, Pike’s Peak and Sonora; A. A. the 
oft F. Alger—172, the occurrence of ily: Cocoa 
and California; J. Marcou—178, Note concerning the ~™re 
nut ; John Bacon.—178, Notice of some North Prof. 
Samuel H. Seudder.—186, of the Koninck li ed 
Agassiz—188, L mg of new Cretaceous Fossils from Texas; 3. 912, 
liceous Uri Calculi; John VEMBER—- 
Catalogue of as vids Seiuauatie containing Cerium : Wm. Sharswood—217, Present 
of Bones of Gorilla from West patoriel Aden, Dy. J. H. Otis-—219, Notice of 
she genus Selandria ; ptions of several of Harris's 
ps 
ro et a oe 
