114 THE PLANT WORLD 



Should we analyze the relation of the activity of these 

 plants in their native habitats to the changes in climatic con- 

 ditions of the habitats, we would expect to find that the period 

 of greatest growth, or of flowering, would coincide with the 

 most favoring portion of the year. During the least favor- 

 able seasons the plants would probably all be in a dormant 

 condition. And we should expect to find that, on the 

 average, the early conditions at Del Monte would not be 

 very far removed from these same most favoring seasons. 

 Without entering further into the subject in this place, there- 

 fore, we may conclude that at least a leading reason, aside 

 from the inherent variability of the plants, why so great a' 

 variety of plants from so extreme types of natural habitats 

 can be grown successfully out-of-cioors at Del Monte, as 

 well as other places on the Coast, lies chiefly in the fact that 

 the average plant conditions are very much like the most 

 favorable conditions in the habitats from which the intro- 

 deduced plants were taken. — ^W. A. Cannon in Out West 

 for May, 1908. 



MINOR ARTICLES AND NOTES. 



The Harpswell Laboratory at South Harpswell, Maine, 

 will be open from June 5th to September 15th. 



Prof. F. D. Heald has resigned his position in the Uni- 

 versity of Nebraska to accept the Professorship of Botany 

 in the Univ^ersity of Texas. The double position held by 

 Dr. Heald in the University of Nebraska has not yet been 

 filled. 



The MacMillan Co., of New York, have recently issued 

 The Origin of Land Flora, by Prof. F. O. Bower. ($5.50 

 net.) 



This may be regarded as one of the most important works 

 on general morphology that has appeared within recent years, 



