AND VARIATION OF TIME. *

WEICHTS.
Troy.
24 grains (gr.) I pennywht,-dwt.
20 dwts ........ 1 ounce,- oz.
8.2 giains, 1 carat, diamond wt.
By this weight gold, silver, and
Jewels only are weighed. The
ounce and pound in this ae the
same as in apothecaries' weight.
Apothecaries'.
20 grains ................ I scruple.
8 scruples ........... 1 dracPm.
8 rS  ......dr ............. 1 ounce.
12 ozs .........    I pound.
Avoirdupois.
16 drans (drs.) I ounce-oz.
16 ozs ........... 1 pound,-lb.
25 lbs  ........... 1 jquarter,-qr.*
4 quarters ..... 100 welght,-cwt.
20 cwts .......... 1 ton.
- Formerly 28 lbs. were allowed
to the quarter, but the practice Is
now nearly out of use excepting
In theeoal mines in Pennsylvania,
the Eastern fish markets, and the
U. S. Custom House.
Grains are the same in each of
the above weights.
5,760 grains, apothecaries' or troy
weight ........... I    .I
7,0   grains, avoirdupois
weight  . ............... I  lb.
Therefore, 144 lbs. avoir. equal
175 lbs. apoth. or troy.
Of Liquids.
1 gallon oil weighs 9.82 lbs. avoIr.
1 gallon distilled water, 10 lbs.
1 gallon sea water, 10.32 Ins.
1 gallon proof spirits, 9.08 lbs.
Miscellaneous.
IRON, LEAD, ETC.
14  lbs ..................... 1 stone.
21k  stones ................ 1  i
8           pigs .....................    o l er.

MEASURES.

Liquid or Wine.
4 gils .......... I pint-pt,
2pints ......... 1 qna tqt
4 quarts ........ 1gallon--gal.
8116 gallons ..... I barrel-bbL
2 barrels ....1 hogshead-fhhd.
U. S. standard
gallon ...... 21 cubic inches.
Beer gallon ... 282      "
36       .."  .... 1 bid.
Time.
60 seconds   ...1 minute.
60 minutes ....... 1 hour.
24 hours ......... I day.
7 days.......... 1 week.
4 weeks ........1 lunar month.
2%29lC0.or 1 calendar month.
80 days .    1... month,(in coin-
puting Interest).
52 weeks amid I day.... year.
12 calendar months.. 1yeard
865 days, 5 hours, 48 mlnutes,and
49 seconds ...... I solar year.
Circular.
60 secds ........... I minute,
60 minu.es ............I degree.
80 degrees ............. 1 sign.
90 degrees ............. quadrant.

PAPER.
The Sizes in inches.

4 nails ..........
4 quarters......
AcISCELLANTl
3 Inches.....  I

144 sq. ins ............. I sq. foot.
9 sq. ft ............. 1 sq. yard.
3014 sq. yds . 1...   sq. rod.
40 sq. rods ........... 1 rood.
4 roWs .............. 1 acre.
Surveyors'.
7.92 inches ......... 1 link.
25 links ............ 1 rod.
4 rods ............... I chain,
10 soare ehains. 1 ,-

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