Occasional Papers on the Theory of Glaciers Now First Collected and Chronologically Arranged: With a Prefatory Note on the Recent Progress and Present Aspect of the TheoryA. and C. Black, 1859 - 278 páginas |
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Página 30
... convex towards the lower extremity ? The first of these questions had always till lately appeared to me a serious difficulty . The fact stated in the second , combined with the positive certainty that the centre of a glacier moves ...
... convex towards the lower extremity ? The first of these questions had always till lately appeared to me a serious difficulty . The fact stated in the second , combined with the positive certainty that the centre of a glacier moves ...
Página 41
... convex surface , but that it is indented by furrows or wrinkles , which would give a section like fig . 7 , in a direction parallel to the length of the glacier A B , fig . 6 , the dots here indicating the snow wreaths as before , and ...
... convex surface , but that it is indented by furrows or wrinkles , which would give a section like fig . 7 , in a direction parallel to the length of the glacier A B , fig . 6 , the dots here indicating the snow wreaths as before , and ...
Página 47
... convex curve . This is perfectly seen in the case of a substance like plaster of * The following passage from M. Dufrenoy's Account of Vesuvius , is interesting , if it were only as recording his remark , that the variation of velocity ...
... convex curve . This is perfectly seen in the case of a substance like plaster of * The following passage from M. Dufrenoy's Account of Vesuvius , is interesting , if it were only as recording his remark , that the variation of velocity ...
Página 48
... convex , or concave at its origin and convex at its termination , as is the case with a glacier . The evidence on this subject , afforded by the models formerly laid before the Royal Society , is so complete and conclusive , that ...
... convex , or concave at its origin and convex at its termination , as is the case with a glacier . The evidence on this subject , afforded by the models formerly laid before the Royal Society , is so complete and conclusive , that ...
Página 62
... convex slope . 66 The mutual action of the parts of the glacier , the drag which the centre exerts upon the sides ( and , by an exact parity of reasoning , the top upon the bottom ) , seemed to me so ob- vious , after measurement had ...
... convex slope . 66 The mutual action of the parts of the glacier , the drag which the centre exerts upon the sides ( and , by an exact parity of reasoning , the top upon the bottom ) , seemed to me so ob- vious , after measurement had ...
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Términos y frases comunes
Alps analogy angle annual motion appears Arveiron August Balmat bands Bishop of Annecy breadth cause centre continuity convex Courmayeur crevasses curve curved bands daily motion direction dirt-bands Edinburgh Elie de Beaumont Etna evidence experiment fact feet fissures fluid fluidity friction frontal dip Glace of Chamouni Glacier des Bois glacier motion glacier moves glacier of Bossons Grindelwald hydrostatic hydrostatic pressure inches inclination July lava stream less Letter on Glaciers longitudinal lower marked mass Mean daily motion measurement Mer de Glace millimetres Mont Blanc Montanvert moraine motion of glaciers movement nearly névé observations origin parallel particles Philosophical Journal plastic Plate portion pressure produce resistance retardation rock Saussure Saussure's theory season sides sliding slope snow solid station summer surface temperature thawing theodolite theory of glaciers tion transverse Travels Trelaporte valley veined structure velocity vertical Vesuvius viscous theory volume weather whilst winter