524 REPORT OF NATIONAL MUSEUM, 1892. 



Lester F. Ward. Fossil Botany, being an Introduction to Palaeophytology from 

 the Standpoint of the Botanist. By H. Graf zu Solms-Laubach. Authorized 

 English translation by Henry E. F. Garnsey. Revised by Isaac Bayley. 

 Science, xvm, New York, December 25, 1891, pp. 360,361. 



Review of the above work, in which it is compared with other works of its class, and is 

 shown to be of chief use in recording the opinion of the author on the nature of problemat- 

 ical vegetable remains. The translation is severely criticised for not having been brought down 

 to date, so that the author's latest decision in such cases could be known. 

 Lester F. Ward. On the Glossopteris Flora. Remarks on a paper read by Dr. 

 August Rothpletz before the Geological Society at Washington, I). C., August 24, 

 1891, "On the Permian, Triassic, and Jurassic formations in the East Indian 

 Archipelago." 



Bulletin of the Geological Society of America, III, 1891, p. 15. 



The view was taken that the Glossopteris flora originating in the Paleozoic contemporane- 

 ously with the recognized Carboniferous flora, unlike the latter, and by virtue of its higher 

 organization, persisted into Mesozoic time, .surviving the Permian refrigeration, and becoming 

 modified, migrated northward, and reappeared at many points as the nowwell known Triassic 

 Rhetic and Oolitic Flora. 

 Lester F. Ward. The Plant-bearing Deposits of the American Trias. 



Bulletin of the Geological Societi/ of America, III. 1891, pp. 23-31. 



A critical analysis of the flora 'of the American Triassic deposits, with a view to their 

 geologic correlation, both with one another and with those of other parts of the world. The 

 facts establish the substantial identity in age of the several beds of the Atlantic slope and a 

 close relation between these and those of New Mexico and Arizona; they also point to the 

 European Keuper, as displayed in Austria, Wurtemburg and Switzerland, as the nearest 

 homologue of the American Trias. 

 Lester F. Ward. Administrative Report to the Director of the U. S. Geological 

 Survey for the year ending .June 30, 1889. 



Tenth Annual Report of the U. S. Geological Surer y, 1888-'89, Washington, 1890, pp. 169-175. 

 (Issued January, 1892.) 

 Lester F. Ward. Principles and methods of Geologic Correlation by means of 

 Fossil Plants. 



American Geologist, IX, Minneapolis, January, 1892, pp. 34-47. 



The law of homotaxis is first explained, with a historical account of the introduction of the 

 term. The leading principles laid down are: First, that the great types of vegetation are 

 characteristic of the great epochs in geology, so that very imperfect material may establish 

 such epochs with certainty; second, that for deposits nearly related stratigraphically such 

 imperfect material is not adequate, but an ample series of good specimens is required; third, 

 that the accurate determination and classification of fossil plants is of purely biological im- 

 portance and not of geological importance. The methods employed in the determination of 

 the age of plant-bearing deposits are set forth in considerable detail. 

 Lester F. Ward. Principes de Corr61ation Geologique an Moyen des Plautes Fos- 

 siles. 



Ginqui&me Congres Oiologique International, Washington, 1891. Proces-Yerbaux des 

 Seances Mercredi le 26 Aout k Mardi le 1 Septembre, 1891. Washington, 1892, pp. 26, 27. 



Brief summary of the part read before the International Geological Congress of a paper 

 entitled "Principes et methodes d'etude de la correlation geologique au moyen des plantes 

 fossiles," in which two of the principles were developed (see supra under date of August 28, 

 1891). The paper was read in French, and a summary furnished in English, of which this is a 

 translation, made by Dr. S. F. Emmons. For contents of the entire paper see last entry. 

 Lester F. Ward. The utilitarian character of Dynamic Sociology. 

 A merle mi Anthropologist, Vol.v, Wash! 1 gton, April, 1892, pp. 97-103. 



This article is a defense of the science of dynamic sociology as expounded in the work of 

 that title against the charge of being a system of speculative philosophy devoid of practical 

 bearing on living Issues. It is directed primarily to establishing broad principles looking to 

 the amelioration of the social condition, but does not claim to set forth any particular scheme 

 of social reform, that part belonging rather to the art of dynamic politics than to the science 

 of dynamic sociology. The general doctrine embodying these principles is that of melioritim, 

 which differs from philanthropy and liumanitarianism as popularly understood by proceeding 

 according to the scientific method to establish the laws of social reorganization, such as w'll 

 result in improving and reforming society. 

 Lester F. Ward. Ueber Tertiapflanzen von Chile; von H. Engelhardt. Frank- 

 fort, 1891. 



