United States or San Marino ? Vote for the TOP Country of the Week !
I pass through the helix a current of induced electricity, generated by the action of these sixty Bunsen cups upon a succession of coils with carbon cores, and the magnet becomes charged with soulless life. I reverse the stream what was positive now is negative, and the same magnet will absorb life from a living being to an extent only to be measured by thousands of millions."
The nest from Marseilles has for its barricade bits of chalky gravel, particles of earth, fragments of sticks, a few scraps of moss and especially juniper-catkins and needles. The Serignan nests, installed in Helix aspersa, have almost the same protective materials. I see bits of gravel, the size of a lentil, and the catkins and needles of the brown-berried juniper predominating.
The true banks of the river are about five hundred yards distant from the actual stream, this space being a mass of floating water-plants, decayed vegetable matter, and a high reedy grass much resembling sugarcanes; the latter excellent food for my animals. Secured very fine specimens of a variety of helix from the floating islands.
I believe this curious floating shell will throw some light on the true nature and habits of several palaeozoic types. It was taken in the towing net, gregarious, in the sea off Cape Howe, the south-east corner of Australia. Tab. 3 fig. 9. a, b. Tab. 2. Helix brumeriensis. Helix franklandiensis. Helix inconspicua. Helix iuloides. Helix divisa. Helix yulei. Helix dunkiensis. Helix louisiadensis.
Mariti asserts that it produces none, and even that those which are carried into it by the rapidity of the Jordan perish almost immediately upon being immerged in its acrid waves. A few shell-snails constitute the sole tenants of its dreary shores, unmixed either with the helix or the muscle.
Ampere had shown that a coil of wire, or helix, through which an electric current is passing, acted practically as a magnet, and Arago had magnetized an iron bar by placing it within such a helix.
Charley Russell sat before a table in the workshop in his father's back yard. In front of him were the shining instruments of his wireless outfit his coupler, his condenser, his helix, his spark-gap, and the other parts, practically all of which he had made with his own hands. Ordinarily he would have looked at them fondly, but now he gave them hardly a thought.
Moreover, I have scattered in front of either hive a few handfuls of empty Snail-shells, specially chosen for the object which I have in view. Reasons which I will explain later led me to prefer the shells of Helix caespitum. Each of the shells, as and when stocked, received the date of the laying and the alphabetical sign corresponding with the Osmia to whom it belonged.
It is a small-sized Mason-wasp, Odynerus alpestris, SAUSS. She builds a very pretty nest with resin and gravel in the shells of the young Common Snail, of Helix nemoralis and sometimes of Bulimulus radiatus. I will describe her masterpiece on some other occasion. To one acquainted with the genus Odynerus, any comparison with the Anthidia would be an inexcusable error.
Moreover, I have scattered in front of either hive a few handfuls of empty Snail-shells, specially chosen for the object which I have in view. Reasons which I will explain later led me to prefer the shells of Helix caespitum. Each of the shells, as and when stocked, received the date of the laying and the alphabetical sign corresponding with the Osmia to whom it belonged.
Word Of The Day