416 SKETCH OF PALEOBOTANY. 



count of its discovery there, with a list of all the localities known to him. 

 Besides giving a summary of the fossil flora of Silesia, in "Wimmer's 

 " Flora von Schlesien " (Breslau, 1844), Goppert prepared a laborious 

 statistical paper ^'" on the condition of the science at that date, which 

 is highly interesting to consult now. The whole number of species then 

 known to him was 1,778, of which 927 were vascular Cryptogams and 

 242 Gymnosperms. 



Germar's great work on the Carboniferous flora of Wettiu and Lobe- 

 jiin '"'^ began to appear in 1844 and continued in .parts until 1853. 

 Though treating of all the forms of life found in this district, the work 

 is necessarily devoted mainly to plants, and the large folio plates display 

 great thoroughness of treatment. To Dr. Audra is due considerable of 

 the text. 



Probably no year since 1828 was more fruitful of results in paleo- 

 botany than 1845, and no year since has exceeded it, if we only speak 

 relatively to the state of the science. Two of the greatest American con- 

 ', tributors, Lesquereux ^^^ and Dawson {supra, p. 377, note 15), entered the 

 ranks at this point, although their first papers gave little earnest of 

 their future career. Besides some twenty minor papers and several 

 small monographs and memoirs of permanent value, we have four large 

 and important works that were either finished or well begun and fairly 

 before the public on that year. Upon the first class we have here no 

 space for comment. Among those of the second may first be mentioned 

 Kurr's memoir on the Jurassic flora of Wurttemberg, ^"^ in which some 

 dozen new species of Ooniferse, ferns, and lower Cryptogams are figured. 

 His supposed discovery of true dicotyledonous (cupuliferous) wood has 

 not been verified. 



Two papers by Goppert are worthy of mention, one describing fossils 

 from the coal measures of Siberia, collected by M. P. de Tchihatcheff, 

 and published by that traveler in his "Voyage dans I'Altai," ^"^ with 

 eleven plates, and one on the fossil flora of the middle Jura of Upper 

 Silesia.^"'' 



"" XJeber den gegenwartigeu Zustand der Kenntniss fossiler Pflanzen, 1844. Leonh. 

 u. Bronn's Neues Jahrbuch, 1845, S. 405. 



=<« Ernst Friedrich Germar. Die Versteinerungen des Steinkobleugebirges von Wet- 

 tin u. LObejUn im Saalkreise. (Petrificata stratorum litbantbracum AVettini et Lobe- 

 junl in circulo Salsae roperta. ) Halle, 1844-'53, fol. (Printed in German and Latin). 



''M " Quelques recberches sur les marais tourbeux en g6u6ral." M^moires de la 

 Si)ci(5t6 des sciences naturelles de Neuchatel, Tome III, 1845. 



"0* Jobann Gottlob Kurr. Beitrage zur fossileu Flora der Juraformation Wurttem- 

 berg^. Stuttgart, 1845 (Einladungssobrift zu der Feier des Geburtsfestes Sr. Majestat 

 Wilbelm von Wurttemberg in der konigl. polytecbniscben Scbule zu Stuttgart den 

 27. September, 1845). 



«» Description des v6g6taux fossiles recueillis par M. P. de Tobibatcheff en Sib6rie, 

 traduitdu manuscrit allemand par P. de Tohihatcbeff et public dans son "Voyage 

 Bcientifique dans I'Altai Oriental et les parties adjacentes de la frontifere de la Chine 

 pages 379 h, 390, planches 25 ^ 35. 



■^ Ueber die fossile Flora der mittlereu Juraschiohten in Obersohlesien. Ueberslcht 

 der sobles. Gesellsch. 1845, p. 139. 



