114 THE AMERICAN BOTANIST 



gonidin, that of certain roses and the Centaurea is cyanidin, 



that of the larkspur is delphinidin and so on. Miss Muriel 

 Wheldale of Newnham College, Cambridge, who knows 

 more about anthocyanins than anybody else, has recently 

 issued a book on the subject entitled ''The Anthocyanin 

 Pigments of Plants." This will prove of much interest 

 to all whose studies lead them into this fascinating field. 

 The first part of the book consists of eight chapters detail- 

 ing the distribution, isolation, constitution, and significance 

 of anthocyanin with an account of the chemical reactions 

 concerned in its formation. The second part deals with 

 the part played by anthocyanin in Genetics. There is also 

 a bibliography of more than six hundred titles. The sub- 

 ject of flower color is one that we are likely to hear much 

 more about in the future since it so frequently indicates 

 the working of Mendel's law, and Miss Wheldale's book 

 forms the most available introduction to the subject. The 

 book is issued by the Cambridge University Press and 

 published in America by G. P. Putnams Sons. New York. 

 The price is $4.50. 



