259 



the veronica hybrida mule Speedwel is supposed to have origi- 

 nated from the officinal one; and the spiked one and the Sib- 

 thorpia Eiiropaea to have for its parents the golden saxifrage and 

 the marsh pennywort. . . . Mr. Graberg, Mr. Schreber, and Mr. 

 Ramstrom, seem of the opinion, that the internal structure or 

 parts of fructification in mule plants resemble the female parent; 

 but that the habit or external structure resembles the male 

 parent. . . . The mule produced from a horse and the ass 

 resembles the horse externally with his ears, mane, and tail; 

 but with the nature or manners of an ass: but the Hinnus 

 [hinny], or creature produced from a male ass, and a mare, 

 resembles the father externally in stature, ash-colour, and the 

 black cross, but with the nature or manners of a horse." 



Jean Broadhurst 



. REVIEWS 



Qanong-'s The Living Plant* 



This book is the second number in division III, Functions of 

 Nature, of The American Nature Series, the first number being 

 Beebe's "The Bird." It is the announced aim of the series as a 

 whole to furnish "a series where the nature-lover can surely find 

 a readable book of high authority"; and the books of the third 

 division of the series " treat of the relation of facts to causes and 

 effects — of heredity and the relations of organism to environ- 

 ment." 



The author's experience as a teacher, and as an investigator 

 and writer, admirably fitted him for the preparation of this work. 

 It was not an easy task; not as easy as might at first be imagined, 

 for while "botany" is, in a sense, a popular science, its popularity, 

 diminishes approximately as the square of the distance from the 

 " how-to-know-the-wild-flowers " phase of it, from which the 

 book under review is a wide departure. 



The book is unique, being the only attempt (so far as known 



to tlie reviewer) to popularize the entire range of plant physiology. 



* Ganong, William F. The Living Plant. A Description and Interpretation 

 of its Functions and Structure. Pp. i-xii -f- 1-478. /. 1-178. New York, Henry 

 Holt & Company, 1913. Price $3.50 net. 



