490 Scientific Intelligence. 



E. W. Claypole, illustrated by maps, is contained in the Trans- 

 actions of the Geological Society of Edinburgh, 1887, p. 421. 



5. Carboniferous Fossil Corals. — Mr. James Thomson has a 

 paper on the genus Lithostrotion, its limits, characters, and 

 species. Ibid., p. 371. 



6. Primordial Fossils from 3ft. Stephens, JV. W. Territory of 

 Canada; by Dr. C. Rominger. — The species embrace Trilobites 

 of the genera Ogygia, Embolimus, Menocephalus f ', Conoceph- 

 alites, Bathyurus ?, and Agiiostus. The beds contain also species 

 of Obolella, Orthis, Eutorgina, Theca or Hyalites. — Proc. Acad. 

 Rat. Sci. Philad., 1887, p. 12. 



7. The Teachings of Geography : suggestions regarding princi- 

 ples and methods for the use of Teachers; by Archibald Geikie, 

 Director General of the Geological Survey of the United Kingdom. 

 202 pp. 1 2mo. London and New York, 1 887, (Macmillan & Co.) — 

 Dr. Geikie's geological science has enabled him to give special 

 value to this work for instructors in geography. 



8. A North Carolina Diamond. — Mr. G. F. Ktjnz states 

 that a diamond weighing 4|- carats or 873 milligrams was found 



on the Alfred Bright farm in Dysartville, Mc- 

 Dowell County, N. C, in the summer of 1886. It 

 is quite perfect, but not pure white, having a faint 

 grayish-green tint. In form it is a distorted hex- 

 octahedron with partial twinning (see figure of 

 two views). Its specific gravity is 3*549, and it measures ten 

 millimeters in length and seven millimeters in width. A num- 

 ber of small stones exhibited as diamonds have been found at 

 Brackettstown, near by, but they have proved to be either trans- 

 parent zircon or smoky-colored quartz. A visit to the locality 

 served to authenticate the facts of its discovery. None of the 

 minerals ordinarily associated with the diamond were found at 

 the locality, and the opinion is expressed that the diamond must 

 therefore have been transported from distant higher ground in 

 the vicinity during a heav} r freshet. 



9. Herderite. — The rare mineral herderite, long known only 

 in a few unique specimens from Saxony (1828) and later (1884) 

 found at Stoneham, Me., has been recently obtained from Mursinsk 

 in the Ural. The crystals are associated with yellow orthoclase, 

 smoky quartz, tourmaline, muscovite and topaz ; in habit they 

 resemble the original mineral more nearly than that of Stoneham. 

 — Berwerth. Ann. Mus. Wien, 1887. 



10. Periclasite. — The rare oxide of magnesia (MgO), occurring 

 only at Monte Somma, has been identified at the manganese 

 mines of Nordmark in Sweden. Blowpipe trials show the pres- 

 ence of a little manganese and iron. — (Efv. Ah. Stockholm, Sept. 

 14, 1887. 



III. Botany. 



1. Monographiai Phanerogamarum Prodromi, Vol. v. Pars 

 secunda: Ampelidem, auctore J. E. Planchon, has at length 

 appeared. It occupies 350 pages; and it represents a great 



