15 



reveal other colonies on the whole six day canoe trip. Thinking 

 this location and the fact just mentioned somewhat unusual, we 

 thought thee would be interested to have a specimen, and the 

 excellent photograph contributed by my friend E. S. Gary. . . ." 



Alfred S. Haines, Westtown, Pa. 

 The habitat is indeed interesting, showing as it does the walk- 

 ing fern in the unusual role of an epiphyte. One ordinarily asso- 

 ciates this species with rocky situations, and it probably reaches its 

 best development in such regions ; but even there it is not a rock 

 lover in the same sense as Asplcniinn Triclionianes or the genera 

 Pellaea and Woodsia. Scattered plants often do grow along 

 the ledges but the best growths are down below where some old 

 moss-covered log or rock furnishes root-protection and oppor- 

 tunity for the leaf tips to develop new plants. The gum tree in 

 the picture with its covering of moss or liverwort seems to have 

 furnished the required conditions, but the origin of the colony — 

 how it got there and whence it came — is not so easy to explain. 

 New York Botanical Garden 



REVIEWS 



Clute's Laboratory Botany* 



In this manual the author has arranged a course to cover a 

 year's work in botany for the high school. Part I deals with the 

 structure and life processes of angiosperms ; part II, with the 

 structure and evolution of the plant kingdom. A list of physio- 

 logical experiments is appended at the end of the book. 



While the order in which the studies are arranged conforms to 

 the plan adopted in the usual botanical text-books, the manual 

 allows considerable flexibility in the treatment of topics as 'regards 

 time of year, subject matter, and local conditions. For example, 

 instead of beginning with the usual topics, cells or seeds, the study 

 of trees may be taken up and provision is made by incorporating 

 in the manual a handy key to the common broad-leaved and 

 evergreen trees ; parts I and II may be transposed ; the physio- 

 logical experiments may be performed apart from the work on 

 morphology or they may be considered in connection with it. 



* Clute, Willard K. Laboratory Botany. Pp. 172. 1909. Ginii and Co. 



