CHARACTERS used in Algebra, see ALGEBRA, Introduction.

♂ or S Conjunction △ Trine
SS Semiflexile Bq Biquintile
* Sextile Vc Quincunx
Q Quintile ○ Opposition
□ Quartile ♉ Dragon's head
Td Tredecile ♋ Dragon's tail

A. ante meridiem, before the sun comes upon the meridian.

O. or N. noon.

P.M. post meridiem, when the sun is past the meridian.

D° ditto, the same qts quarters
N° numero, or number S or s shillings
F° folio, or page d pence or deniers
C or Ⓟ hundred weight, or 112 pounds lb pound weight.
R° recto } folio
V° vero }

VOL. V. Part I.

£. or l. pounds sterling Rx rixdollar
pr per, or by, pr ann. Dt ducat
by the year, pr cent. P. S. postscript, &c.

|| the character of parallellism V equiangular or similar
△ triangle ≡ equilateral
□ square ∠ an angle
▭ rectangle ∟ right angle
○ circle ⊥ perpendicular
° denotes a degree; thus, 45° implies 45 degrees.
' denotes a minute; thus, 30' is 30 minutes.
'' denotes seconds, thirds, and fourths: and the same characters are used where the progressions are by tens, as it is here by fixties.
( ) parenthesis D. D. doctor in divinity
[ ] crotchet V. D. M. minister of the word of God
- hyphen I. L. D. doctor of laws
' apostrophe J. V. D. doctor of civil and canon law
' emphasis or accent " quotation
~ breve M. D. doctor in physic
.. dialysis A. M. master of arts
^ caret and circumflex A. B. bachelor of arts
† † and * references F. R. S. fellow of the royal society.
§ section or division
¶ paragraph

For the other characters used in grammar, see COMMA, COLON, SEMICOLON, &c.

§ paragraph P. P. pater patrie
¶ digests C. Code
Scito. senatus consulto C. C. consules
E. extra T. titulus
S. P. Q. R. senatus populusque Romanus P. P. D. D. propria pecunia dedicavit
D. D. M. dono dedit monumentum.
R. recipe M. manipulus, a handful
a, aa, or ana, of each alike P. a pugil
lb a pound, or a pint P. Æ. equal quantities
℥ an ounce S. A. according to art
℥ a drachm q. s. a sufficient quantity
℥ a scruple q. pl. as much as you please
gr. grains P. P. pulvis patrum, the Jesuits bark.
β or 1/2 half of any thing
cong. congius, a gallon
coch. cochleare, a spoonful

S. V. Siste viator, i. e. Stop traveller.
M. S. Memoriae sacrum, i. e. Sacred to the memory.

♩ character of a large 8 ♩ crotchet \frac{1}{2}
♩ a long 4 ♩ quaver \frac{1}{4}
♩ a breve 2 ♩ semiquaver \frac{1}{8}
○ a semibreve 1 ♩ demisemiquaver \frac{1}{16}
◡ a minima \frac{1}{2}

♯ character of a sharp note; this character at the beginning of a line or space, denotes that all the notes in that line are to be taken a semitone higher than in the natural series; and the same affects all the octaves above and below, though not marked: but when prefixed to any particular note, it shows that note alone to be taken a semitone higher than it would be without such a character.

♭ or b, character of a flat note: this is the contrary to the other above; that is, a semitone lower.

♮ character of a natural note: when in a line or series of artificial notes, marked at the beginning ♮ or ♯, the natural note happens to be required, it is denoted by this character.

♭ character of the treble clef.

♭ character of the mean clef.

♭ bass clef.

\frac{1}{2} or \frac{2}{4}, characters of common double time, signifying the measure of two crotchets to be equal to two notes, of which four make a semibreve.

♩♩♩ characters that distinguish the movements of common time, the first implying slow, the second quick, and the third very quick.

\frac{1}{3}, \frac{2}{3}, \frac{3}{3}, \frac{4}{3}, \frac{5}{3}, characters of simple triple time, the measure of which is equal to three semibreves, or to three minims.

\frac{1}{6}, \frac{2}{6}, or \frac{3}{6}, characters of a mixed triple time, where the measure is equal to six crotchets, or six quavers.

\frac{1}{12}, or \frac{2}{12}, or \frac{3}{12}, or \frac{4}{12}, or \frac{5}{12}, characters of compound triple time.

\frac{1}{24}, \frac{2}{24}, \frac{3}{24}, or \frac{4}{24}, or \frac{5}{24}, characters of that species of triple time called the measure of twelve times.