Proceedings of the Cambridge Philosophical Society: Mathematical and physical sciences, Volume 3

Cambridge Philosophical Society, 1880
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Page 317 - The hyperbola is the locus of a point which moves so that the difference of its distances from two fixed points, called foci, is a constant. This constant is equal to the length of the transverse axis. In Fig. 2-16, F and F' are the foci, and line AB, which joins the vertices A and B, is the transverse axis.
Page 296 - Newton, president, in the chair. — The following communications were made to the Society : — On a new arrangement for sensitive flames, by Lord Rayleigh.
Page 190 - A table of the circles arising from the division of a unit, or any other whole number,, by all the integers from 1 to 1024 ; being all the pure decimal quotients that can arise from this source.
Page 319 - SW, was balloted for and duly elected a Fellow of the Society. The following communications were read : — "THE RAINFALL OF DOMINICA, WEST INDIES." By CV BELLAMY, FRMet.Soc., Assoc.M.Inst.CE (p. 261). " MEANS OF THE DAILY MINIMUM, DAILY AVERAGE, AND DAILY MAXIMUM TEMPERATCRES OF THE BRITISH ISLES, 1871-95.
Page 266 - The discovery clearly proves that the genus Peripatus, which is widely distributed over the globe, is the persisting remnant of what was probably a large group of forms, from which the present tracheate Arthropoda are descended. The affinities of Peripatus render any further light on its anatomy a matter of some interest ; and through the kindness of Mr. Moseley I have had an opportunity of making investigations on some well preserved examples of Peripatus capensis, a few of the results of which...
Page 267 - ... median division of the body-cavity by longitudinal septa of transverse muscles. Each fully developed organ consists of three parts: (1) A dilated vesicle opening externally at the base of a foot. (2) A coiled glandular tube connected with this, and subdivided again into several minor divisions. (3) A short terminal portion opening at one extremity into the coiled tube (2) and at the other, as I believe, into the body-cavity.
Page 267 - I have had an opportunity of making investigations on some well preserved examples of Peripatus capensis, a few of the results of which I propose to lay before the Society. I shall confine my observations to three organs. (1) The segmental organs, (2) the nervous system, (3) the so-called fat bodies of Mr. Moseley. In all the segments of the body, with the exception of the first two or three postoral ones, there are present glandular bodies, apparently equivalent to the segmental organs of Annelids....
Page 86 - An attempt to explain some of the principal Phenomena of Electricity by Means of an Elastic Fluid
Page 267 - Around the segmentai organs in the feet are peculiar cells richly supplied with tracheae, which appear to me to be similar to the fat bodies in insects. There are two glandular bodies in the feet in addition to the segmental organs. The more obvious features of the nervous system have been fully made out by previous observers, who have shown that it consists of large paired supraœsophageal ganglia connected with two widely separated ventral cords — stated by them not to be ganglionated.
Page 12 - ... flints he exhibited and distinguished two kinds — one in which infiltration had taken place all round the outside, often a good test of the drift origin of certain fragments ; and the other in which a difference of texture, due generally to some included organism, had determined and limited the area over which infiltration had produced bands of colour. He pointed out that these differently coloured included portions, whether banded or not, affected the fracture, as they also depended upon the...

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