302 PALEONTOLOGY. 



Dall, W. H. Notes on some Tertiary Possils from the California 

 Coast, with a list of the Species obtained from a well at San 

 Diego, California, with Descriptions of two New Species. Proc. 

 Calif. Ac. Sci. vol. V. part 3, pp. 296-299. 



A list of 69 species, mostly from fine sand 140-160 feet down. The 

 new species are Chrysodomus Diegoensis and Waldheimia Kennedy i. 



Davidson, T. What is a Brachiopod? 2,27id Ann. Rep. Brighton 

 Nat. Hist. Soc. p. 61. Translated in Ann. Soc. Mai. Belg, i. x. 

 Memoires, pp. 36-86, pis. iii., iv. 

 Distribution in time, pp. 71-76. In the Prench version (the fuller 

 of the two) a folding table shows the range in time of each genus. 



Dawson, Principal. Origin and History of Life on our Planet. An 

 Address before the American Association for the Advancement of 

 Science, at Detroit, Michigan. Pp. 26. Montreal. 



Deals with the bearings of Palaeontology upon the questions con- 

 nected with the origin and history of life upon the earth, and upon the 

 doctrine of descent with modification. Concludes that " the introduc- 

 tion of new species of animals and plants has been a continuous pro- 

 cess, not necessarily in the sense of derivation of one species from 

 another, but in the higher sense of the continued operation of the 

 cause or causes which introduced life at first." Concludes also that 

 *' Palseontology furnishes no direct evidence, perhaps never can furnish 

 any, as to the actual transformation of one species into another, or as 

 to the actual circumstances of the creation of a species ; but the drift 

 of its evidence is to show that species come in j)er saltmn, rather than 

 by any slow and gradual process." H. A. N. 



. The Dawn of Life ; being the history of the oldest known 



Possil Eemains, and their Eolations to Geological Time, and to the 

 Development of the Animal Kingdom. Pp. 239, eight illustrations, 

 49 woodcuts. London. 



Deals principally with the history of the discovery of Eozo'on Cana- 

 dense, and with all the known facts bearing on its structure and nature. 

 The author first gives a descriptive sketch of the Laurentian formation, 

 accompanied by sections and a coloured map showing the distribution 

 of the Laurentian limestones in the counties of Ottawa and Argenteuil. 

 Secondly, a history is given of the various steps which led to the dis- 

 covery of Eozoon, and a record of its interpretation by Carpenter and 

 the author. Thirdly, a chapter is devoted to a consideration of the 

 minute structure exhibited by Eozo'on ; and this is compared with the 

 structure of recent Foraminifera. Chapter 5 is on the manner in 

 which Eozobn has been preserved, and on fossilization by infiltration in 

 general. In Chap. 6 the contemporaries and successors of Eozoon are 

 considered, with special reference to AixJiceosjjhcerina, Strornatopora^ 

 CaunojQora, and Becejytamlites. Another chapter is devoted to a con- 

 sideration of the various objections urged against the organic nature of 

 Eozo'on ; and a final chapter deals with certain speculative considera- 

 tions which may be drawn from the study of this fossil. H. A. N. 



