strictly to my determination to collect only fruiting specimens, and did not 

 recognize any of the mosses at the time I collected them. Second, I find it here) 

 in "Hills and Dales, " just outside of the city limits of Dayton, sparsely scattered 

 over a very limited area, growing on clay and limestone, on the steep sides of 

 gullies and banks of brooks, in open deciduous woods. All I have found here 

 has been within a tract less than one-half mile square, all sterile. 



Sulphur Lick Springs, is about fifty miles southeast of Dayton, and about 

 nine miles west of Chillicothe. Both stations present about the same physical 

 conditions. Dayton station is about nine hundred feet above sea level, while 

 the country around Sulphur Lick Springs ranges between one thousand and 

 twelve hundred feet above the sea. Both are in the same geologic horizon, the 

 Upper Silurian, and both are covered with heavy deposits of glacial drift, and 

 with the same type of forest growth. 



H. S, Jewett, M.D. 



Dayton, Ohio. 



REVIEWS 



INTER-RELATIONSHIPS OF THE BRYOPHYTA 



By Dr. Frank Cavers 



Some months ago the Editor received a complimentary copy of the above 

 pamphlet for review, but a desire for a more complete and thorough examination 

 of the work has delayed the matter until an apology is due Dr. Cavers. 



The pamphlet of 210 pp., 6"x9^", illustrated by 72 figures in the text is a 

 thoughtful and suggestive contribution to the subject indicated by its title. 

 With some exceptions the classification adopted in the Pflanzenfamilien of 

 Engler and Prantl are followed. 



The Hepaticce including the Anthocerotales occupy 151 pages, making a 

 pretty complete survey of that subdivision of the "Bryophyta. " Because of 

 their great variety of structure and the perplexing nature of their relationships^ 

 65 pages are given to the comparatively small groups Sphcerocarpales and Mar- 

 chantiales. 



Dr. Cavers does not accept Howe's view that the Anthocerotales are worthy 

 of being elevated to the rank of a class co-ordinate with Hepaticem and disposes 

 of the main distinction on which Howe bases his view, i. e. " (i) A single large 

 chloroplast to each cell, instead of several smaller chloroplasts as in the assimi- 

 lative tissues of the Hepaticce proper; (ii) the antheridia arise within the thallus — 

 are endogenous in origin — and the walls of the immersed archegonia are con- 

 fluent with the adjacent tissues; (iii) the presence of meristematic tissue in the 

 capsule near its base, by the activity of which the capsule has a long continued 

 growth, ripening spores towards its apex while forming new spore-mother-cells 

 below; (iv) the presence, in probably all cases, of a columella around which the 



