18(5 The Utter Cretaceous Floras of the World 



voyage in 1854, the region has been visited by Olrik (1859), Torrell. 

 Rink (1848-1851), Whymper (1867), Nordenskiold (1870), Freist and 

 Nauckhoff (1871), Steenstrup, Pfaff, Jorgensen, Krarup Smith, Peary 

 (1897), Drygalski, and other explorers and naturalists. The geology 

 has been described by Brown, 1 Nordenskiold, 2 K. J. V. Steenstrup,' 1 White 

 and Schuchert, 4 and a detailed map by Hammer and Steenstrup 5 is 

 available. Heim " spent some time in this region in 1909, and has made 

 several contributions remarkable for the fine photographs with which 

 they are illustrated. 



The elaboration of all of the early collections was entrusted to Pro- 

 fessor Heer and forms such a considerable portion of the seven splendid 

 volumes of bis "Flora Fossilis Arctica " (1868-1883). The history of 

 exploration has been given by Brown and Nordenskiold, and rather' 

 extensive accounts of the paleontological studies of Heer upon this mate- 

 rial have been published by Saporta,' Ward, 8 and others. 



Paleobotanists have eagerly awaited an expected revision of Heer's 

 work by Nathorst, since the bulk of the materials upon which that work 

 was based are in the Natural History Museum at Stockholm, but only two 



1 Brown, R., Geological notes on the Noursoak Peninsula, Disco Island, and 

 the country in the vicinity of Disco Bay, North Greenland. Trans. Geol. Soc, 

 Glasgow, vol. v, 1875, pp. 55-112, with map. 



2 Nordenskiold, S. E., Account of an expedition to Greenland in the year 

 1870. Geol. Mag., vol. ix, 1872. pp. 289-306, 355-368, 409-437, 449-463, 516-524, 

 pi. vii (map), viii. 



3 Steenstrup, K. J. V., in Heer, Fl. Foss. Arct, Bd. vii, 1883, pp. 228-250, with 

 map. Meddelelser om Gronland iv, 1893, pp. 173-243, with map. Ibidem, v, 

 1893, pp. 1-78, with map. 



* White and Schuchert, Cretaceous series of the West Coast of Greenland. 

 Bull. Geol. Soc. Am., vol. ix, 1898, pp. 343, 348, pi. xxiv-xxvi. 



5 Hammer and Steenstrup, Meddelelser om Gronland, Heft iv, 1893. 



Heim, A., Ueber die Petrographie und Geologie der Umgebungen von Kar- 

 suarsuk, Meddelelser om Gronland, Bd. xlvii, No. 3, 1911, pp. 175-228, pi. ix 

 (map), 2x. Heim, A. and Rikli, M., Sommerfahrten in Gronland, Frauenfeld, 

 1910. 



7 Saporta, G. de, Ann. Sci. Nat., 5e serie, Bot. t. ix, pp. 86-126, 1868. Congr. 

 Intern. Sci. Geog., Paris, 1875, Compte rendu, t. i, pp. 197-242, pi. iv, v, 1878. 



8 Ward, L. F., 8th Ann. Rept. U. S. Geol. Surv. for 1886-88, pp. 830-834, 1889. 



