—35— 



of De Vries. A "kleine Art" is closely allied to some other species, differing- 

 from it in a very few particulars, while an undoubted species has more numerous- 

 and more definite points of distinction when contrasted with its relatives. For 

 example, in the genus Lophozia, L. porphyroleuca (Nees) Schiffn. is described as- 

 a variety of L. ventricosa (Dicks.) Dumort., L. longiflora (Nees) Schiffn. is given 

 as a "kleine Art" to be segregated from L. ventricosa, while such a species as- 

 L. excisa (Dicks.) Dumort. is regarded as undoubtedly distinct from L. ventricosa. 

 Of course the conception of a species is largely subjective, and it must be ad- 

 mitted that the views advanced are based on definite principles, even if some of 

 them can hardly meet with unqualified acceptance. 



It is a pleasure to recommend Dr. Miiller's book to students of the Hepaticae. 

 It is based on a first hand knowledge of the group, it gives evidence of prolonged 

 and painstaking study, and the conclusions reached in doubtful cases are the 

 result of sound and critical judgment. Alexander W. Evans 



[The work may be ordered from Eduard Kummer, Leipzig, Germany, at 

 33 Marks, 60 Pf.] 



MEETING OF THE SULLIVANT MOSS SOCIETY 



The eighth annual meeting of the Sullivant Moss Society was held in the 

 Business High School building at Washington, D. C, on December 28th, in 

 connection with the yearly meeting of the American Association for the Advance- 

 ment of Science. 



The forenoon was devoted to arranging the various exhibits, and to a renewal, 

 of acquaintanceships, while the regular programme of papers was held in the 

 afternoon. The following is a list of the various exhibits. 



Miss C. C. Haynes and Mrs. Smith sent advance sheets of a check-list of 

 the Hepatics of North America, soon to be issued by them. Mrs. Smith also 

 sent a number of drawings, plates, and other articles illustrative of the work of 

 the " Bryologist. " Mr. George B. Kaiser and Mrs. Gadsby showed an exten- 

 sive series of specimens, each mounted on a separate card and enclosed in a cover,, 

 designed to facilitate either exhibition or reference without damage to the 

 specimen. Many of the specimens were accompanied by colored drawings, 

 showing dissections of the various species. 



Miss Carlotta H. Browne exhibited specimens of different species of the 

 Bartramiaceae, illustrative of her paper on the genus Bartramia, and Mr. A. S. 

 Foster contributed a suite of lichen specimens to accompany his article upon the 

 Stictae of the Pacific Coast. Miss Lorenz also kindly forwarded a book contain- 

 ing original drawings of the various species of New England Hepatics, compris- 

 ing a nearly complete representation of the species of that region. (158 of the 

 165 species.) 



The formal programme opened at half past two o'clock. Dr. A. W. Evans- 

 presiding, and the following papers were presented. 



1. The Biological Relations of Certain Lower Fungi, Prof. Bruce Fink. 



2. A New Frullania from Florida, Dr. A. W. Evans. 



