We give below, for the behoof of authors and correctors for the Press, a specimen of the manner in which the errors in a proofsheet should be marked on the margin. An atten tive study of the symbols and their interpretation will promote a good under standing between the author and the printer: -

Peter Schoeffer is said to be the person who in- Caps.

* vented cast metal types, having learned the art

EXPLANATIONS.

dele - take out the superfluous word "of."

turn the reversed letter "p."

insert a space between "who" and "engraved." less space between the words.

make a new paragraph.

tr. transpose the words "desirous" and "ardently." stet. let incidendi (accidentally erased) remain.

to.f. "wrong fount" type to be changed.

out, s. c. "out, see copy." The words omitted being too numerous to be written on the margin. The other marks are self-explanatory. (See 3246 and 1850.)

Showing the number of Days from any date in one Month to the same Date in any other Month. Example: How many days from the 2d of February to the 2d of August ? Look for February at the left hand, and August at the top - the angle is 181. In leap year, add one day if February be included.