The Edinburgh New Philosophical Journal
Format: Paperback
ISBN13: 9780217280969
Paperback|9780217280969
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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: 16 feet in circumference, and 160 feet in height; and one specimen which had been blown down, and of which the top had been broken off, measured 88 feet in length, and even at this height was 18 inches in diameter. The ascent of the sap in trees is a subject which has long occupied the attention of physiologists. Some difference of opinion, however, exists regarding it, and hitherto it is believed no very definite conclusions have been arrived at;?and although not strictly connected with the subject of this paper, I may be excused for remarking, that the quantity of sap required to sustain such enormous trees as these I have been describing, and the source and nature of the power by which a supply of fluid is raised and kept up, at the great height of 180 feet from the ground, are inquiries which, could they be satisfactorily solved, would form most interesting and instructive additions to our knowledge regarding vegetable physiology. On Pelonaia, a Nem Genus ofTunicated Mbllusks, with Descrip lions of two Species. By Edward Forbes, Esq., and John Goodsir, Esq., Members of the Wernerian Natural History Society. Communicated by the'Authors. With a Plate. Among the Ascidian Mollusca which we have collected together, with a view to a complete investigation of the British Tunicata, are two remarkable animals, which appear to represent a very natural genus as yet unrecorded. They differ from their allies in the tribe chiefly by their not being fixed, and by their form, which reminds one more of that of a Sipunculus than of an Ascidia; indeed they may be regarded as analogues of certain Sipunculidae, and in that point of view the details of their forms and structure are of much interest to the naturalist., They are both of a cylindrical shape, having their orifices on the same...
| ISBN-13 | 9780217280969 |
|---|---|
| ISBN-10 | 021728096X |
| Weight | 1.16 Pounds |
| Dimensions | 9.00 x 6.00 x 0.80 In |
| List Price | $25.41 |
| Format | Paperback |
|---|---|
| Pages | 358 pages |
| Publisher | |
| Published On | 2009-08-01 |
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