"Helix" Quotes from Famous Books
 ... vanity of the man, but to indicate more precisely the species. Sometimes two men will, by accident, give the same name (independently) to two species of the same genus. More frequently a later author will misapply the specific name of an older one. Thus the Helix putris of Montagu is not H. putris of Linnaeus, though Montague supposed it to be so. In such a case we cannot define the species by Helix putris alone, but must append the name of the author whom we quote. But when a species has never borne but one name (as Corvus frugilegus), ...
— The Life and Letters of Charles Darwin, Volume I • Francis Darwin
... in its vertical dimension, by a moving plane. If necessary to assist the mind, suspend a spiral spring above a pail of water, then raise the pail until the coils, one after another, become immersed. The spring would represent the helix, and the surface of the water the moving plane. Concentrating attention upon this surface, you would see a point—the elliptical cross-section of the wire where it intersected the plane—moving round ...
— Four-Dimensional Vistas • Claude Fayette Bragdon
... a piece of copper wire into a helix or spiral, as in Fig. 7, and pass a current of electricity through it, the magnetic whirls in the surrounding space are modified, and the lines of force are no longer small circles wrapping round the conducting ...
— Scientific American Supplement, No. 324, March 18, 1882 • Various
... markings, size, form, and texture or striation of the surface, even in specimens collected in the same locality. Thus, a French author has enumerated no less than 198 varieties of the common wood-snail (Helix nemoralis), while of the equally common garden-snail (Helix hortensis) ninety varieties have been described. Fresh-water shells are also subject to great variation, so that there is much uncertainty ...
— Darwinism (1889) • Alfred Russel Wallace
... shouted the voice, "but what we don't know is this: the cockle of the ear belongs to the species of the Helix, and the little bones near the drum are exactly like the animal in Limnaeus stagnalis, and that's printed ...
— In Midsummer Days and Other Tales • August Strindberg
... we call an electromagnet, consisting of a coil or helix of wire, the turns of which are insulated from each other, and within which is usually included an iron core, is by far the most useful of all the so-called translating devices employed in telephony. In performing the ordinary functions of an electromagnet it translates ...
— Cyclopedia of Telephony & Telegraphy Vol. 1 - A General Reference Work on Telephony, etc. etc. • Kempster Miller
... and the former scenes of my studies were not without their influence on both the animal and vegetable kingdoms. The group of land-shells was different, in at least its proportions; and one well-marked mollusc—the large tortoise-shell helix (helix aspersa), very abundant in this neighbourhood—I had never seen in the north at all. I formed, too, my first acquaintance in this woody, bush-skirted walk, with the hedgehog in its wild state—an animal which does not occur to ...
— My Schools and Schoolmasters - or The Story of my Education. • Hugh Miller
... ivy, the climbing stems of which never flower, but always first produce erect and free branches with rhombic leaves. These branches have often been used as cuttings and yield little erect and richly flowering shrubs, which are known in [437] horticulture under the varietal name of Hedera Helix arborea. ...
— Species and Varieties, Their Origin by Mutation • Hugo DeVries
... univalves. The most important genera among these, both in a recent and fossil state, are Helix (Figure 38), Cyclostoma (Figure 39), Pupa (Figure 40), Clausilia (Figure 41) Bulimus (Figure 42), Glandina ...
— The Student's Elements of Geology • Sir Charles Lyell
... upright leaf was selected, with its two lateral edges equally and very slightly incurved. A row of small flies was placed along one margin. When looked at next day, after 15 hrs., this margin, but not the other, was found folded inwards, like the helix of the human ear, to the breadth of 1/10 of an inch, so as to lie partly over the row of flies (fig. 15). The glands on which the flies rested, as well as those on the over-lapping margin which had been brought into contact with the flies, were all ...
— Insectivorous Plants • Charles Darwin
... set there will be very little need of a sending helix, as close tuning will be hardly possible; but for the stationary set this is ...
— Boy Scouts Handbook - The First Edition, 1911 • Boy Scouts of America
... which bewilder our compasses, must possess an extraordinary influence. And it would suffice that a block of iron should be subjected to their action for it to be changed into a magnet of power proportioned to the intensity of the current, to the number of turns of the electric helix, and to the square root of the diameter of the block of magnetized iron. Thus, then, the bulk of the sphinx which upreared its mystic form upon this outer edge of the southern lands might be calculated by ...
— An Antarctic Mystery • Jules Verne
... however, consider the original story. Once upon a time two philosophers were walking in their garden, when one of them espied a highly respectable member of the Helix Aspersa family, a pioneer in mountaineering, in the act of making the perilous ascent of a wall 20 feet high. Judging by the trail, the gentleman calculated that the snail ascended 3 feet each day, sleeping and slipping back 2 ...
— The Canterbury Puzzles - And Other Curious Problems • Henry Ernest Dudeney |
