168 ; 
SOLID, OR CUBIC MEASURE, 
Used for finding the content of timber, and such 
things as have length, breadth, and depth or thickness. 
Thus, 12 inches square and 12 inches deep, make 
solid foot; or 12 times 12 make 144, and 12 times 144 
make 1728 solid inches, or. one solid foot. 
1728 solid inches = make 1 solid or cubic foot. 
27 cubic feet - == 180lid yard. 
40 solid ft. of round timber, or 14 
50 solid ft. of square timber 0, 
128 solid feet - 1 cord. 
MOTION, OR CIRCLE MEASURE, 
Used by navigators, astronomers, and others. 
60.seconds (sec. or”) make 1 minute, / 
60 minutes - 1 degree ° 
30 degrees . 0 1sign, &g. 
12 signs, or 360 degrees 1 circle, cir. 
TIME. 
The divisions are, 
60 seconds (sec.) make 1 minute, min. 
60 minutes lhour, , A. 
24 hours 1 day, d, 
7 days 1 week, Wr 
4 wecks 1 lunar month, m. 
12 months, or 865 days 1 year, Y. 
A common year has 8365 days, but every fourth 
year, callcd Lcap Year, has 366 days. 
The 12 months of the ycar, as divided in Almanacs. 
contain days as follows: 
Tho fourth, eleventh, ninth, and sixth, 
Have thirty days to each affıx’d; 
And every other thirty-one, 
Except the second month alone, 
Which has but twenty-eight, in fine, 
Till Leap Year gives it twenty-nine. 
THE LND.