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POPULAR SCIENCE REYIEW. 
remaining in solution. The oil drops are ultimately decomposed into 
sulphur and sulphuretted hydrogen. In making similar experiments with 
quinine, brucine, and other bases, no such results were observed. 
GEOLOGY AND PALEONTOLOGY. 
The Influence of the Gulf-stream. — There is no more general subject of 
conversation among Englishmen than that of climate, and there are few 
more popular scientific explanations of our meteorology than that involved 
in a vague reference to the Gulf-stream. Everyone will tell you of the 
influence of the Gulf-stream, and yet very few, we are convinced, have any 
idea of the extent or character of the influence of this vast body of water. 
We would therefore advise all who are anxious to inform themselves on 
this point to consult the paper by Mr. Henry Woodward, F.G.S. (the 
editor), in the Geological Magazine for July. In this communication INH. 
Woodward has put together the ideas of all those who have given serious 
attention to the subject, and he has as a result produced a paper which is 
most suggestive from a geological aspect, and most instructive and interest- 
ing from a general point of view. 
Bos primigenius in the Lowefi' Boulder-clay of Scotland . — This interesting 
discovery is announced by Mr. James Geikie. Mr. Geikie had heard from 
the navvies on the Crofthead and Kilmarnock Extension Railway that they 
had come across a wonderful big bull’s head,” and on visiting the spot 
found that the specimen was the skull of Bos primigenius. The skull is in 
rather an imperfect state and only one of the hom-cores remains, the other 
having been broken oft‘ near the base. The perfect core measures 31 inches 
along the outer curve, and gives at its base a circumference of 14 inches. 
The breadth of the forehead between the horns is 10 inches. From the 
character of the flat forehead, from the origin of the cores, and from the 
direction and curvature of the remaining one, Mr. Geikie thinks there can 
be no doubt of the species described. The specimen was embedded some 
few feet deep in soft mud or clay, interlaminated with lines and beds of 
sand, and occasionally layers of fine gravel. There were remains of some 
plant in the clay, but they were in too imperfect a state of presei*vation to 
enable Mr. Geikie to come to any concltfsion as to their nature. The paper 
in which Mr. Geikie records his discovery is accompanied by a number of 
sections showing the relations of the beds to the boulder-clay. — Vide 
Geological Magazine, September. 
Greensand Brachiopoda. — Mr. J. F. Walker has published an account of 
the Brachiopoda found by him in the Lower Greensand at Upware. He 
describes some new species, and gives a very useful tabular scheme of the 
distribution of Brachiopoda in the Lower Greensand of this country. — Ibid. 
M. Brongniart on Fossil Lycopodiacece. — M. Brongniart has been working 
recently at this subject, and has had the opportimity of examining quite a 
new and perfect form of the Triplosporites of Robert Brown. The specimen, 
which was perfectly silicified, was divided with a fine saw, and displays all 
the organisation in the most perfect manner. It presents itself under the 
