Scientific Opinion, Том 31870 |
Между кориците на книгата
Резултати 1 - 5 от 89.
Страница 11
... probably prove an introduction of importance . This tree is confined to the valley of the river Chagres , Isthmus of Panama , and was discovered in 1866 , and introduced by Dr. Seemann to England . He says : On entering a Forest of ...
... probably prove an introduction of importance . This tree is confined to the valley of the river Chagres , Isthmus of Panama , and was discovered in 1866 , and introduced by Dr. Seemann to England . He says : On entering a Forest of ...
Страница 20
... probably a Gymnosperm , and allied to Sigillari ; that although Stig- maria may not always show medullary rays , the distinct separation of the wood into wedges is an evidence of their having existed ; that the [ Jan. 5 , 1870 ...
... probably a Gymnosperm , and allied to Sigillari ; that although Stig- maria may not always show medullary rays , the distinct separation of the wood into wedges is an evidence of their having existed ; that the [ Jan. 5 , 1870 ...
Страница 21
... probably a chessman , and was in the costume of a German Emperor ; the other was a figure of the Virgin and Child . Both were probably late 14th century work . Mr. O. Morgan read a paper " On a Chalice of the 15th Century , and on ...
... probably a chessman , and was in the costume of a German Emperor ; the other was a figure of the Virgin and Child . Both were probably late 14th century work . Mr. O. Morgan read a paper " On a Chalice of the 15th Century , and on ...
Страница 24
... probably used for driving the rude chisel formed by the flint inserted into the wooden socket , while the large stone hammers were used for breaking up the rock . There was no evidence that metal of any kind was used in the work . Mr ...
... probably used for driving the rude chisel formed by the flint inserted into the wooden socket , while the large stone hammers were used for breaking up the rock . There was no evidence that metal of any kind was used in the work . Mr ...
Страница 26
... probably wanderers from the woods of Sanquhar , where the species was known to have been introduced from the island of Arran , a few years ago . Mr. Gray likewise stated that in some parts of Perthshire it was no uncommon thing for ...
... probably wanderers from the woods of Sanquhar , where the species was known to have been introduced from the island of Arran , a few years ago . Mr. Gray likewise stated that in some parts of Perthshire it was no uncommon thing for ...
Често срещани думи и фрази
acetic ether acid action alizarine ammonia animals apparatus appearance augite beds body British carbon carbonic acid carboniferous chair character chemical coal College colour comets communication containing corresponding deposits described Ditto elected enstatite evidence examination exhibited existence experiments fact favourable flowers fossil geological geology give heat hydrogen insects interest iron John Herschel Journal lectures letter light London matter means Medical meeting memoir ment Messrs meteors method microscope mineral Miocene Museum Natural History Neocomian notice object observed obtained organic oxide paper Paris perihelion period phenomena plants pollen portion present president produced Prof Professor published quantity R. A. Proctor recent referred regard remarks rocks Royal Horticultural Society Royal Institution Royal Society Science SCIENTIFIC OPINION seen species specimens spectrum stamens substance surface temperature terraces tion tube Uniformitarianism usnic acid
Популярни откъси
Страница 121 - Geography of India. Comprising an account of British India, and the various states enclosed and adjoining. Fcap. pp. 250. 2s. Geological Papers on Western India. Including Cutch, Scinde, and the south-east coast of Arabia. To which is added a Summary of the Geology of India generally. Edited for the Government by HENRY J.
Страница 239 - Other Worlds than Ours ; The Plurality of Worlds Studied under the Light of Recent Scientific Researches.
Страница 249 - It is about a mile in length, and a quarter of a mile in breadth, but contracts at both ends.
Страница 137 - The seeds of things seem to lie latent in the air, ready to appear and produce their kind, whenever they light on a proper matrix. The extremely small seeds of fern, mosses, mushrooms, and some other plants are concealed and wafted about in the air, every part whereof seems replete with seeds of one kind or other. The whole atmosphere seems alive. There is everywhere acid to corrode, and seed to engender. Iron will rust, and mould will grow in all places.
Страница 99 - Tour discovered the yeast plant, a living organism, which, when placed in a proper medium, feeds, grows, and reproduces itself, and in this way carries on the process which we name fermentation. Fermentation was thus proved to be a product of life instead of a process of decay.
Страница 99 - ¡Hun: focus of the electric beam and inhale the dirt revealed there. Nor is the disgust abolished by the reflection that, although we do not see the nastiness, we are churning it in our lungs every hour and minute of our lives. There is no respite to this contact with dirt; and the wonder is, not that we should from time to time suffer from its presence, but that so small a portion of it would appear to be deadly to man.
Страница 294 - The ordinary gaseous and ordinary liquid states are, in short, only widely separated forms of the same condition of matter, and may be made to pass into one another by a series of gradations so gentle that the passage shall nowhere present any interruption or breach of continuity. From carbonic acid as a perfect gas to carbonic acid as a perfect liquid, the transition we have seen may be accomplished by a continuous process, and the gas and liquid are only distant stages of a long series of continuous...
Страница 239 - PRINCIPLES of MECHANISM, designed for the Use of Students in the Universities, and for Engineering Students generally.
Страница 105 - In the case of an ordinary gaslight the best experiments show that not more than one or two per cent of the radiant energy consists of visible rays, the rest is either invisible heat or actinism ; that is to say, over ninetyeight per cent of the gas is wasted in producing rays that do not help in making objects visible.
Страница 99 - ... birth to an oak competent to produce a whole crop of acorns, each gifted with the power of reproducing its parent tree ; and as thus from a single seedling a whole forest may spring ; so, it is...