DIAMETER (from the Gr. διά, through, μέτρον, measure), in geometry, a line passing through the centre of a circle or conic section and terminated by the curve; the “principal diameters” of the ellipse and hyperbola coincide with the “axes” and are at right angles; “conjugate diameters” are such that each bisects chords parallel to the other. The diameter of a quadric... more...

OUR CHRISTMAS PLAY. Our Emily wrote a play for our Christmas entertainment. Emily, Ruth, Mary, and Uncle Peter, all took part in it. The curtain fell amid very great applause from grandma, grandpa, father, and Uncle Charles, Brothers Robert and John, Jane, the housemaid, Aunt Alice, and some six of our cousins. So you see we had a good audience. As it is the only play we have ever seen acted, we may be... more...

OLD FATHER TIME. "Professor," said May, turning on the sofa where she was lying, "Jack has brought me a calendar that runs for ever so many years. You know the doctor says I'll not be well for two whole years, or perhaps three. I have been wondering what month among them all I shall be able to run about in; and then I began to think who could have made the first calendar, and what led... more...

MODERN TYPES. (By Mr. Punch's Own Type Writer.) No. XXI.—THE AVERAGE UNDERGRADUATE. Those who live much in the society of the very middle-aged, hear from them loud and frequent complaints of the decay of courtesy and the general deterioration, both of manners and of habits, observable in the young men of the day. With many portentous shakings of the head, these grizzling censors inform those who... more...

MODERN TYPES. (By Mr. Punch's own Type Writer.) No. XX.—THE DIVORCÉE. The Court over which Sir JAMES HANNEN presides was instituted for the purification of morals by the separation of ill-assorted couples. Matrimonial errors, which had hitherto stood upon the level of political grievances, capable of redress only after the careful and unbiassed attention of British legislators had been, at much... more...

AMERICAN ANTIQUITY. The results of the past ten or fifteen years in historical investigation are exceedingly mortifying to any one who has been proud to call himself a student of History. We had thought, perhaps, that we knew something of the origin of human events and the gradual development from the past into the world of to-day. We had read Herodotus, and Gibbon, and Gillies, and done manful duty... more...

FINANCIAL. In some respects our report is favorable. Our receipts for the eight months ending May 31st are $18,487.18 more than for the same period last year. If the Association had received funds from the Government this year for the eight months, $10,127.95, the receipts would have been 28,615.13 more than last year. The payments for the eight months have been $11,315.16 less than last year. With... more...

OUR BOOKING-OFFICE.King Cracker the Millionth, of the Bonbon Dynasty.The Baron's Assistants say that of the Christmas works published by Messrs. HUTCHINSON & CO. they can and do recommend The Children of Wilton Chase by L.J. MEAD, to which they accord their mead of praise, which likewise they bestow on FLORENCE MARRYAT's The Little Marine and the Japanese Lily, a book of adventures in the... more...

ENGLISH AND AMERICAN REPRINTS OF OLD BOOKS Most people are aware of the great demand there is for English literature, and indeed for all literature in the United States: for some years the anxiety of persons in that part of the world to obtain copies of our early printed books, prose, poetry, and plays, has been well known to such as collect and sell them on this side of the water. Where American... more...

IMPROVED DYNAMO MACHINE. The continuous current and the alternating current generators invented by Dr. J. Hopkinson and Dr. Alexander Muirhead are peculiarly interesting as being probably the first in which the bobbins of the armature were wound with copper ribbon and arranged on a disk armature much in the same way as was afterward done by Sir William Thomson and by Mr. Ferranti. In the... more...