THE BOTANISTS OF PHILADELPHIA. 425 



of Horticulture, Botany and Kindred Subjects. Volumes 

 I and II, 1891-1892, running to date. 



11. The American Naturalist. Volume I, published at 

 Salem, Mass., 1868 (octavo), until Volume XX, 1876, when 

 it was printed at Boston, until Volume XII, 1878, when the 

 publication was transferred to Philadelphia, where it still 

 continues to be printed. 



12. Transactions of the Wagner Free Institute of Science 

 of Philadelphia. Quarto, Volume I, May, 1887. Volume 

 II, December, 1889. Volume III, Part I, August, 1890. 

 Part 2, December, 1892. Part 3, March, 1895. Part 4, 

 April, 1898. Volume IV, January, 1896, begun. Volume 

 V, January, 1898, begun. 



13. Forest Leaves, started July, 1886, has run to Volume 

 VII, No. 4, August, 1899. Published bi-monthly by the 

 Pennsylvania Forestry Association. 



14. Contributions from the Botanical Laboratory of the 

 University of Pennsylvania. A serial publication, begun 

 in 1892, and devoted to botanical articles by the professors, 

 instructors and students of the School of Biology. The first 

 two numbers of Volume I were published under similar 

 cover, and the title of the plates were similarly printed 

 (Bot. Cont. Univ. Penna.), but No. 3, Volume I, 1897, was 

 published for the University of Pennsylvania, with the 

 authorization of the Committee on Publication. The covers 

 now conform with Publications of the University of Penn- 

 sylvania (new series). As set forth in the classification, 

 the Contributions from the Botanical Laboratory belong 

 to Group II, Serial Publications, Series in Bofany. The 

 articles that have so far appeared are as follows : * 



* The headings of the plates in Volume I. Xo. 3, and Volume II, No. 1, were 

 changed, the numbers being unbracketed, as in the two previous numbers, and the 

 title reading " Bot. Contrib. Univ. Penna." 



