The fifteenth century in music was one of those periods found in all the arts when the conflicting and chaotic principles of a previous era are becoming crystalized and unified so as to become powerful to rise to great heights in the succeeding generations. It was a century when the colorful troubadours and trouveres of the twelve and thirteen hundreds were gradually ceasing, with the disappearance of cortoisie, to sing their love songs throughout the country-side. Little by little their unwritten tunes were assuming a style which at least is intelligible to the modern ear.

But it was not until the first quarter of the fifteenth century that we see this style more or less consistently developed, this time in England. John Dunstable, much of whose work has recently come to light, had acquired a European reputation for his songs. For some reason difficult to understand, he was, however, very soon forgotten and became an almost legendary character sometimes called the "inventor" of counterpoint, and, most curious of all, even identified once or twice as St. Duston.

True it is, nevertheless, that Dunstable, if he did not actually originate contrapuntal composition, still developed it greatly, and English counterpoint affecting the Netherlands made possible the work of Okenhelm and Josquin Des Pres, the first great composer.

Bearing in it as it does the seeds of future development, choral music of the fifteenth century should be of interest to any music lover, and such a one could do no better than go to the Music Building at 11 o'clock this morning to near Professor Davison lecture on that subject.

Other occasions of interest today are:

9 O'Clock

"Protection against Unreasonable Searches and Seizures," Professor Yeomans, Harvard 2, Government 1.

11 O'Clock

"The Art of the Fourteenth Century, B. C.", Professor Chase, Fogg Museum, Fine Arts 1c.

"William Beckford," Professor Maynadier, Sever 23, English 29a.

12 O'Clock

"The Works of Mozart," Professor Hill, Music Building, Music 3.

"Factors in the Quantitative Control of Population," Professor Carver, Sever 17, Economics 8.

"The Causes of Glaciation," Professor Mather, Geological Lecture Hall, Geology 4.

"Various Aspects of the Russian Emancipation Edict of 1861," Professor Langer, Harvard 6, History 30a.

2 O'Clock

"Porfirio Diaz," Professor Haring, Sever 7, History 59.

8.15 O'Clock

"Concert of Chamber Music," Mr. Arthur Whiting, Paine Concert Hall, Music Building.