184 REPORT ON NATIONAL MUSEUM. 



Waed, Lester F. On the cause of the absence of trees on the great 

 l)lains. A paper read before the Biological Society of Washngton, " 

 December 9, 1881. 



(Kansas City Review of Science and Industry, March, 1882, pp. 697-702.) 

 A diecussiou of the question from the writer's observations, a statement of 

 the leading facts, a review of current theories, and a statement of the coa- 

 clusions which seem best warranted by all the data attainable. 



Guide to the flora of Washington and vicinity, by Lester F. 



Ward, A. M, Washington, Government Printing Ofiice, 1881. 8vo. 

 pp. 264, with map of Washington and vicinity. 



This forms Bulletin of the United States National Museum No. 2t, and 

 Smitbsonian Publication No. 444, and contains a general discussion of the 

 botanical peculiarities of the country around Washington, an annotated cata- 

 logue of the plants, a summary by orders and groups, a check-list, and an 

 appendix of suggestions to beginners ; also a map of the region. 



Directions for collecting and preserving plants, by Lester F. 



Ward. 



From Bulletin of the United States National Museum, No. 22. Washing- 

 ton : Published by the Smithsonian Institution, 1882. pp. 209-237. 



Check-list. Flora of Washington, D. C, and vicinity, by 



Lester F. W ard. 



From Bulletin of the United States National Museum, No. 22. Washington : 

 Published by the Smithsonian Institution, 1882. pp. 148-207. 



Scientific basis of positive political economy. 



(International Review, Ajiril and May, 1882, xii, pp. 352-365; 439-453.) 

 These papers are chiefly devoted to the consideration of a new method of 

 classifying natural phenomena, with a view to proving that a large part of 

 such phenomena, including many forms of social activity, is within the 

 sphere of human control through the exercise of intelligence and foresight. 

 Slightly modified they will form the latter portion of chapter viii (vol.ii, pp. 

 76-106) of a work by the writer entitled "Dynamic Sociology, or Applied 

 Social Science," in press. 



Kant's antinomies, in the light of modern science. 



(Journal of Speculative Philosophy, October, 1881, xv, pp. 381-395.) 

 A paper read before the Centennial Anniversary Convention, of Kanfa 

 "Critique of Pure Reason," at Saratoga Springs, New York, July 6, 1881. 



An argument to prove that the "theses" and "antitheses" of Kant's anti- 

 nomies are legitimate scientific questions, and that modem science, in at least 

 three of the four antinomies, points to the truth of the antithesis. 



■ Darwin as a botanist. 



(Proceedings of the Biological Society of Washington, 1882, i, pp. 81-86.) 

 Read before the Darwin memorial meeting of the Biological Society of 



Washington, May 12, 1882. 



A review of Darwin's botanical works, an explanation of his methods, and 



a summary of the philosophic results of his labors in this field. 



