Say rather:
I will arrive tomorrow morning. You may call at eight o'clock this
evening.
The letters _a. m._ are the abbreviation for ante meridiem, Latin for
before noon; and _p. m._ for post meridiem, meaning afternoon.
+489.+ Two consecutive years may be written 1914-15, but use 1915 rather
than '15. In the heading of letters it is better to write the date out
in full, as, _May 28, 1915_, instead of 5-28-15.
In the back of your dictionary you will find a complete list of accepted
abbreviations used in writing and printing. The list that follows
contains abbreviations most commonly used, especially in business
correspondence:
@ for at
acct. for account
agt. for agent
amt. for amount
ans. for answer
asst. for assistant
atty. for attorney
av. for average
bal. for balance
bbl. for barrel
bdl. for bundle
bro. for brother
bros. for brothers
blk. for black
bls. for bales
bu. or bush. for bushels
Co. for company
chgd. for charged
C. O. D. for "cash on delivery"
cr. creditor
cts. cents
cwt. for hundred weight
cu. for cubic
do. for the same
dr. for debtor
doz. for dozen
ea. for "each"
et al. for "and others"
e. g. for example
etc. for "and so forth"
ft. for foot or feet
frt. freight
f. o. b. "free on board"
gal. gallon
guar. for guaranty
hdkfs. for handkerchiefs
h. p. horse power
in. for inches
ins. for insurance
inst. for this month
i. e. for "that is"
Jr. for junior
lb. for pound
memo. for memorandum
Mon. for Monday
mo. for month
mos. for months
mdse. for merchandise
mfg. for manufacturing
Mss. for manuscript
no. for number
N. B. for take notice
O. K. for "all correct"
oz. for ounce
% for per cent
pp. pages
pr. for pair
pt. for pint
pk. for peck
prox. for next month
qt. for quart
recd. for received
sec. for second
Sec. for secretary
Sr. for senior
Supt. for superintendent
ult. for last month
via by way of
viz. namely
vol. for volume
wt. for weight
yd. for yard
yds. for yards
yr. for year