Ad valo′rem (Lat., according to the value), a term applied to customs or duties levied according to the worth of the goods, as sworn to by the owner, and not according to number, weight, measure, &c.

Advance-note, a draft on the owner of a vessel, generally for one month's wages, given by the master to the sailors on their signing the articles of agreement. The granting of such notes to British sailors was made illegal by an Act passed in 1880.

Ad′vent (Lat. adventus, an arrival, 'the coming of our Saviour'), the name applied to the holy season which occupies the four or, according to the Greek Church, six weeks preceding Christmas, and which forms the first portion of the ecclesiastical year, as observed by the Anglican, the Roman Catholic, and the Greek Church.

Ad′ventists, a group of six American religious sects who believe in the speedy coming of Christ, and generally practise adult immersion. The first sect of Adventists was founded by William Miller in 1831.—There is also a sect called Seventh-day Adventists, who hold that the coming of Christ is at hand, and maintain that the Sabbath is still the seventh day of the week.

Ad′verb, one of the parts of speech used to limit or qualify the signification of an adjective, verb, or other adverb; as, very cold, naturally brave, much more clearly, readily agreed. Adverbs may be classified as follows: (1) Adverbs of time, as, now, then, never, &c.; (2) of place, as, here, there, where, &c.; (3) of degree, as, very, much, nearly, almost, &c.; (4) of affirmation, negation, or doubt, as, yes, no, certainly, perhaps, &c.; (5) of manner, as, well, badly, clearly, &c.

Advertis′ing. Advertising on a small scale is a practice as old as commerce; but modern advertising on a large scale cannot be dated further back than 1785, when the Times was founded. The last thirty years have witnessed a great increase in the importance of advertisements as part of the policy of a progressive business. Much more intelligence and vastly more money is now spent on advertising than ever was before. America led the way, but the British are not now far behind in the number and ingenuity of their advertisements.

There are roughly speaking five distinct types of advertisement:—

(1) Press advertising, under which heading is included daily and weekly newspapers, monthly magazines and year books, directories, &c.

(2) Mail-order advertising, which comprises form-letters, catalogues.

(3) Poster and showcard advertising. This includes large and small posters, on hoardings, in railway stations or tubes, &c.