Nature's Teachings: Human Invention Anticipated by NatureRoberts, 1885 - 533 pagine |
Dall'interno del libro
Risultati 1-5 di 41
Pagina 8
... direction , though very slowly . The base is capable of extension and contraction , and by elongating one side of it , fixing the elongated portion , and then raising the remainder of the base towards it , the animal makes practically a ...
... direction , though very slowly . The base is capable of extension and contraction , and by elongating one side of it , fixing the elongated portion , and then raising the remainder of the base towards it , the animal makes practically a ...
Pagina 19
... direction , the instrument is forced backwards , though the operator is leaning against it with all his weight . In fact , a comparatively small screw , if working in hard wood or metal , so that the threads could not break , could lift ...
... direction , the instrument is forced backwards , though the operator is leaning against it with all his weight . In fact , a comparatively small screw , if working in hard wood or metal , so that the threads could not break , could lift ...
Pagina 20
... below it is the rudder , which , like the sculling oar , may be used either for propulsion or direction . On the left hand we have three examples of the same THE WINDMILL AND AERIAL TOP . 21 mechanical powers as 20 NATURE'S TEACHINGS .
... below it is the rudder , which , like the sculling oar , may be used either for propulsion or direction . On the left hand we have three examples of the same THE WINDMILL AND AERIAL TOP . 21 mechanical powers as 20 NATURE'S TEACHINGS .
Pagina 29
... can be paddled in either direction , and , as one of the paddlers always acts as steersman , no rudder is needed . The mode of construction is perfectly simple . The labour is divided between the sexes : the women cut large sheets.
... can be paddled in either direction , and , as one of the paddlers always acts as steersman , no rudder is needed . The mode of construction is perfectly simple . The labour is divided between the sexes : the women cut large sheets.
Pagina 36
... direction of the twist . There was no tendency to turn in the contrary direction . Evidently the thread became hard as soon as it was drawn away from the body . " By wetting the sides of slips of glass , I secured two speci- PRINCIPLE ...
... direction of the twist . There was no tendency to turn in the contrary direction . Evidently the thread became hard as soon as it was drawn away from the body . " By wetting the sides of slips of glass , I secured two speci- PRINCIPLE ...
Altre edizioni - Visualizza tutto
Nature's Teachings: Human Invention Anticipated by Nature John George Wood Visualizzazione completa - 1903 |
Nature's Teachings: Human Invention Anticipated by Nature John George Wood Visualizzazione completa - 1877 |
Parole e frasi comuni
accompanying illustration animal Ant-bear armed armour arrow barbs bird birdlime blade blow-gun body Borneo called caterpillars centre chaffinch civilisation cocoon colour combs common convex lens Coracle creature Crystal Palace curious curved Cydippe dagger earth edge eggs elastic especially Esquimaux exactly example feet fibres figure fish force glass head Hippopotamus hole hook human hunter inches insect instrument invention jaws Kafir larva larvæ left hand legs length light manner means mentioned mode molluscs Nature nearly nest object ordinary ovipositor pass piece plates poison Polar Bear prey principle pupa purpose ranjows reader remarkable resemblance Retiarius right hand round scale armour scarcely seen shape sharp sheaths shell shown side similar sometimes spear specimen Spider spikes spiracles spiral SPOKESHAVE spring stone structure surface sword Synapta tail teeth THAUMATROPE tree tube tunnel upper vessel walls weapon weight wonderful wood
Brani popolari
Pagina 326 - And knew not until the flood came, and took them all away; so shall also the coming of the Son of man be. Then shall two be in the field; the one shall be taken, and the other left.
Pagina 512 - Heedless he heard them; but disdain'd reply; The bow perusing with exactest eye. Then as some heavenly minstrel, taught to sing High notes responsive to the trembling string, To some new strain when he adapts the lyre, Or the dumb lute refits with vocal wire, Relaxes, strains, and draws them to and fro; So the great master drew the mighty bow: • And drew with ease. One hand aloft display'd The bending horns, and one the string essay'd.
Pagina 2 - Light as a flake of foam upon the wind, Keel upward from the deep emerged a shell, Shaped like the moon ere half her horn is filled ; Fraught writh young life, it righted as it rose, And moved at will along the yielding water. The native pilot of this little bark Put out a tier of oars on either side, Spread to the wafting breeze a twofold sail, And mounted up and glided down the billow In happy freedom, pleased to feel...
Pagina 512 - Then, as some heavenly minstrel, taught to sing High notes responsive to the trembling string, To some new strain when he adapts the lyre, Or the dumb lute refits with vocal wire, Relaxes, strains, and draws them to and fro; So the great master drew the mighty bow, And drew with ease. One hand aloft display'd The bending horns, and one the string essay'd. From his essaying hand the string, let fly, Twang'd short and sharp like the shrill swallow's cry.
Pagina 315 - It is true that the serpent has no limbs, yet it can outclimb the monkey, outswim the fish, outleap the jerboa, and, suddenly loosing the close coils of its crouching spiral, it can spring into the air and seize the bird upon the wing: all these creatures have been observed to fall its prey.
Pagina 68 - ... fingers with a hot iron. Nevertheless, there was no remarkable appearance ; neither swelling, nor pustule, nor inflammation. The pain rapidly spread along the arm, as far as the armpit. I was then seized with frequent sneezing and with a copious running at the nose, as if I had caught a violent cold in the head. About noon...
Pagina 93 - ... uncouth and venomous beast, avoid a paroxysm of horror at the sight of the common house-spider. At all events, whether we were intruding or not, in turning this stone, we must pay a fine for having done so ; for there lies an animal as foul and monstrous to the eye as "hydra, gorgon, or...
Pagina 257 - He had mounted along the side of thu window, nearly as high as the ceiling, a little below which he had begun to break through. The bed was covered with large pieces of plaster, the lath was exposed for at least fifteen inches...
Pagina 327 - In the day when the keepers of the house shall tremble, and the strong men shall bow themselves, and the grinders cease because they are few, and those that look out of the windows be darkened. And the doors shall be shut in the streets when the sound of the grinding is low...