Revieics — Brief Notices. 429 



localities. A very fine Frondicularia, which he has cailedi paucicana, is 

 the chief novelty. Mr. Heron- Allen and Mr. Earland describe in the 

 Journal of the Quekett Microscopical Club, April, 1909, a singular 

 species ascribed to the genus Technitelh, which builds itself a test 

 entirely of echinoderm plates secured without visible cement. It was 

 found in the Moray Firth. Remarks are made as to the singular 

 selective powers of the Foraminifera (Arenacea) as regards their 

 building material, parallel instances of which occur to us among the 

 caddis-worms, certain Australian caterpillars, and the conch yliophoroid 

 mollusca. 



4. Mr. 11. J. Lechmere Guppy has contributed an article on " The 

 Geological Connexions of the Caribean Region " (Trans. Canadian Inst., 

 1909, vol. viii). He remarks that the hypothesis commonly called 

 'the Atlantis Theory' has occupied liis attention since 1865, and he 

 now offers a further statement on the subject. He concludes that 

 there was in Tertiary times a land connexion between the Caribean 

 region and I^orth Africa, and a sea connexion between the Caribean 

 Sea and the Pacific. These features probably existed in Cretaceous 

 times, and came to an end at the close of the Miocene period, "when 

 the final remnant of the Atlantis disappeared and the Isthmus of 

 Panama rose above the sea level, and the last gap in the Andes was 

 closed." 



5. Warth's Igneous Rocks. — We have received from Dr. H. Warth 

 a " Classification of Igneous Rocks according to their Chemical Com- 

 position" (reprinted from the Proc. Royal Society, Edinburgli, 1908, 

 vol. xxviii). This is an amplification of a paper printed in the 

 Geological Magazine for March, 1906, p. 131, and it is accompanied 

 by an index. 



6. Department of Mines, Ottawa. — In the Summary Beport of 

 the Geological Survey Branch of the Department of Mines, Ottawa, 

 Canada, for 1908, the Director, Mr. R. ~VV. Brock, calls attention to the 

 need of a large increase in the Staff of the Survey in order to cope 

 with the demands occasioned by the rapid opening up of the country. 

 Field-work is, moreover, hampered in some areas by the want of 

 accurate topographic maps, and this, it is hoped, will be remedied 

 by the establishment of a Topographic division. The investigation 

 of the water resources of the Dominion is becoming more and more 

 important, and it is noted that a Well-boring Records division has 

 been formed. The Survey is endeavouring to get in touch with the 

 drillers all over Canada, and sample bags, etc., are sent to them which 

 they can return free of charge. Reports on work carried out in 

 various parts of the country are contributed by members of the field- 

 staff', and special reports on mineralogy, palaeontology, zoology, and 

 ethnology are given by the officers in charge of those branches. 



7. The Care of Natural Monuments, with special reference to 

 Great Britain and Germany, is the title of a small book by Professor 

 H. Conwentz, Prussian State Commissioner for the Care of Natural 

 Monuments (Cambridge, 1909 ; price 2s. 6^/. net). The author 

 draws attention to various ways in which natural scenery is disfigured 



