80° Miscellaneous Intelligence. 
descending node takes place near the north pole of the earth, each 
succeeding one a little further south, and finally the last passes 
off near the south pole. The order is reversed for a group that 
occurs at the ascending node. Formule are deduced by which 
and 
thence the exact time of its occurrence. e number of eclipses 
of any Joa, me the time of their occurrence, is the work of but 
a few mom 
The beead generally learns to compute pala: altogether 
mechanically, without seeing any connection 
usual methods. But experience with a small class proves it is not 
so with this. He realizes the connection between the tables and 
an AEA to occur a hundred years hence, a hundred years ago, 
r for any one in the whole period of 3 000 years, be as readily 
pal spramag as for one that is to occur in the immediate future. 
is very desirable that an interest in the method iy be taken 
by educators, such that the author may be meee 2 EN eae an 
edition speciall y adapted to students. AN. 
Cumberland University, Lebanon, Tenn. 
3. Multiplieation and Division Table, containing the products 
a! sewnvers between 1 and 100, fOr stad use of Lecel ante, Com- 
ON 
78 .s .D. (Harv.). New York, 1 (John Wiley & Sons). 
Those who have much aAthactionl Cae to do, will find 
their work geatky facilitated by the use of these tables, and will 
ei ab their value. s regards clearness and neatness of 
typographical work they are all that could be ge sired ; a sma 
page might perhaps have been more convenien 
4. Special Report of the New York State sie on the Pres- 
ervation of the Scenery of Niagara Falls, and Fourth Annual 
natural attractions of Niagara Falls. It is to be hoped that the 
necessary action tures ” taken by the State to accomplish this im- 
portant end. The volume contains a he series of photographic 
views amiga 5 points raised in the Report. The secon 
pa a statement of the results icishohed by the Topo- 
rachinal "ducrars in 1879. 
The Winchester os tory of Yale College: ee of the Horological and 
Thermometrical Bur Be sce ed by the Obse: y Board of Managers for 
the information of pore D terested in these sagen ceria Second Lesior 8 
pp. 4to. New Haven, Coals 1880.—This circular will be noticed in an 
number. 
