82 Scientific Intelligence. 



the current was increased the brilliancy of the stones increased 

 accordingly. Under the mercury light it became a pale lilac. 



This beryl has been found by Ford* to contain 4*98 per cent 

 of alkalies, distributed as follows : Na 3 0, 1-60; Li 2 0, 1*68; Cs a O, 

 1"70. Along with this unusual amount of alkalies goes a slightly 

 higher specific gravity (2 - 79) and an increase in the mean refrac- 

 tive index and the amount of birefringence. w. k. f. 



11. Tables for the Determination of Minerals by Physical 

 Properties, ascertainable with the aid of a few Field Instruments, 

 based on the system of the late Prof. Dr. A. Weisbach ; by 

 Perstfor Frazer and Amos Peaslee Brown. Sixth edition. 

 Pp. xiii, 125. Philadelphia, 1910 (J. B. Lippincott Co.).— This is 

 a new edition of a well-known work, which has filled a highly 

 useful place, both in Germany and as translated into English. 



12. The Subantarctic Islands of New Zealand: Reports on 

 the Geo-physics, Geology, Zoology, and Botany of the Islands 

 lying to the South of New Zealand, based mainly on Observa- 

 tions and Collections made during an Expedition in the Govern- 

 ment Steamer " Hinemoa " (Captain J. Bollons) in November, 

 190*7. Edited by Chas. Chilton. Published by the Philosophi- 

 cal Institute of Canterbury. Two volumes : Vol. I, pp. xxxv, 388, 

 with 20 plates and many figures. Vol. II, pp. 389-848, with 

 numerous illustrations (John Mackay, Wellington, N. Z., 1909). — 

 This work consists of thirty-five separate articles, written by spec- 

 ialists in various parts of the world, and based on the collections 

 obtained by the members of the scientific staff which accompanied 

 the magnetic survey expedition to Auckland and Campbell 

 Islands. Three of the papers relate to geo-physics, 3 to geology, 

 22 to the various groups of animals, 6 to plants; while the conclud- 

 ing article, by the editor, presents a summary of the results and dis- 

 cusses the biological relations of the islands. Many new species 

 of invertebrates were discovered, and are here described and 

 figured. The only mammals found about the islands are seals 

 and cetaceans. There are no reptiles of any kind. Seabirds, of 

 which the species of albatross and penguin are most conspicuous, 

 are abundant. Of these there are several excellent reproductions 

 of photographs showing the nesting habits. There are a few kinds 

 of land birds, in addition to several species of British birds, 

 including the English sparrow, goldfinch, starling, thrush and 

 blackbird which have reached the islands from New Zealand. A 

 comparison of the animals and plants found on these islands 

 offers strong evidecne of a former connection with the Antarctic 

 continent. w. r. c. 



13. British Nudibranchiate Mollusca, with Figures of the 

 Species ; Part viii, /Supplementary. Figures by the late Joshua 

 Ai/dek and the late Albany Hancock and Others, text by Sir 

 Charles Eliot. Quarto, 197 pp., with 8 colored plates. 

 London, 1910 (Ray Society). — This supplementary volume to 

 Alder and Hancock's classic monograph, published in 1845-1855, 



* This Journal, xxx, 128, 1910, 



