1921] Merriami: Palaeontological Research on the Pacific Coast 251 



Fossil Plants of Kecent Formations," including species from Van- 

 couver Island and Bellingham Bay, Washington. In 1883, J. S. 

 Newberry of Columbia University published descriptions of sixteen 

 new species of plants from the flora of the John Day region, this 

 material having been obtained by Thomas Condon. In 1878, Les- 

 quereux published a monograph of the Auriferovis gravel flora in 

 connection with J. D. AVhitney's great report on the gravels. In 

 1883, Lesquereux in his monograph on Cretaceous and Tertiary floras 

 described large collections from the Eocene and Miocene of the Jolm 

 Day region obtained by C. D. A^oy, a professional collector from Cali- 

 fornia. In 1889, Lesquereux published again a large series of species 

 from the same horizon in the Proceedings of the United States 

 National Museum. 



One of the most important contributions concerning the Mesozoic 

 flora of the Pacific Coast is a paper by William Foiitaine on the 

 Jurassic Flora of Douglas County, Oregon, published in 1905 in a 

 monograph on the Mesozoic flora of the United States by Lester F. 

 Ward, Fontaine and others. In the same work is an important article 

 by Fontaine on the flora of the Shasta group of California. 



Significant work on the fossil plants of the Pacific Coast region is 

 that carried on by F. H. Knowlton of the United States Geological 

 Survey within the second period of palaeontological study on the West 

 Coast. The work of Knowlton includes an intensive study of large 

 collections representing the Puget flora from the Eocene of Washing- 

 ton, as yet unpublished ; a complete revision of the Tertiary flora of 

 the John Day region in eastern Oregon published in a bulletin of the 

 Geological Survey in 1902 ; and a revision of the flora of the auriferous 

 gravels of California and allied floras appearing in Lindgren's paper 

 on the Tertiary gravels of the Sierra Nevada of California published 

 as a Professional Paper of the United States Geological Survey. 



Dr. Knowlton 's studies of the fossil plants of eastern Oregon have 

 shown clearly the presence of at least four floras : two in the Clarno 

 Eocene, one in the John Day Oligocene, and one in the Mascall 

 Miocene. 



Dr. Knowlton has also discussed in detail the problem of the 

 Jurassic age of the supposed Jurassic flora of Thompson Creek, Ore- 

 gon, and in numerous other short articles, either independent or 

 accompanying reports of the Geological Survey, he has added much 

 to our knowledge of the Tertiary floras of the whole western region. 



