. Bulletin of the British Museum (Natural History). IjO The Earth Generatfii ami Anatomized Crest to crest of wave: 6-700 miles 5400 miles. FIGURE 8 ML'titioncd in Hobbs's manuscript on pages i (39), Si (91). 85 (92), gi (97), 111 (107). This diagram has been lost and is here reconstructed. In his text Hobbs reters both to a Figure 8 and to a Figure VIII. I have assumed he had in mind the same diagram, and have here combined the information which relates to both of them. Hobbs is chiefly concerned in this figure to demonstrate two points: [a) that the shell, or crust, of the globe is ve
. Bulletin of the British Museum (Natural History). IjO The Earth Generatfii ami Anatomized Crest to crest of wave: 6-700 miles 5400 miles. FIGURE 8 ML'titioncd in Hobbs's manuscript on pages i (39), Si (91). 85 (92), gi (97), 111 (107). This diagram has been lost and is here reconstructed. In his text Hobbs reters both to a Figure 8 and to a Figure VIII. I have assumed he had in mind the same diagram, and have here combined the information which relates to both of them. Hobbs is chiefly concerned in this figure to demonstrate two points: [a) that the shell, or crust, of the globe is very thin indeed as a traction ol the diameter of the globe itself. His estimate is the—reasonably accurate—one often or twelve miles, which, as he says, can only properly be represented on his diagram by the thickness of the stroke of a pen. He is concerned to show that strata within this shell are horizontal. He infers the thinness of the shell from the shallowness of the sea in the English Channel, and bv analogv with the orhh minor. (/)) that at the two poles of the globe are to be touiid niusculous, cordious areas, whose pulse creates the motion of the tides. On pages 134-8 of the manuscript (in this edition, pages 120-123) Hobbs discusses the wave motion by which this pulse of the tides is communicated from the poles to the equator (being conveyed some 600—700 miles per tide, and diminishing towards the equator). He seems to have illustrated this bv his map, which I have not endeavoured to reconstruct. I have however inserted an indication of such a wave motion emanating from the poles as an indication of what Hobbs mav have had m Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
Size: 1534px × 1628px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., 1981, boo, bookauthorbritishmuseumnaturalhistory, bookcentury1900
