THE AMERICAN BOTANIST 37 



ten chapters deal with plant pathology and the way fungi cause 

 disease. Then comes a section on special plant pathology in 

 which is given a list of the principal plant diseases of the 

 United States and Canada, alphabetically arranged by host- 

 plants with references to the literature concerning them, fol- 

 lowed by a detailed account of these diseases. Forty-six 

 lessons for use in laboratory work come next, and the book 

 concludes with a series of appendices covering the making and 

 use of all known fungicides, keys to the groups of the higher 

 fungi, and various other matters. Throughout the book, each 

 chapter is followed by a very extensive list of references to the 

 literature of the subject. The chapters themselves have a 

 wealth of detail about individual species that is impressive. 

 There are also Kir) illustrations. The author states that the 

 book is the outcome of twenty-seven years work with the fungi, 

 and looking through it. we can well believe him. It is pub- 

 lished by P. Blakiston's Son & Co., Philadelphia, at $3.00 net. 

 Forty years ago, DeBary issued a volume on the anatomy of 

 vascular plants which ever since has exerted a marked influence 

 on the trend of botanical investigations. During this time, 

 however, much additional information on the subject has come 

 to light, partly through experiment and partly as the result 

 of studies with fossil plants, which has caused a change in some 

 of our ideas regarding evolution. Thus is rendered timely a 

 recent book by Prof. Edward Charles Jeffrey on "The Anatomy 

 of Woody Plants." In the early chapters of this volume, the 

 different tissues of the stem — tracheids, vessels, rays, phloem, 

 parenchyma, fibers, etc. — are discussed and then the various 

 organs of the plant come up for investigation, after which the 

 trend of evolution, as indicated by the facts put in evidence 

 is outlined. According to the author, the original tissue was 

 woody with the primary function of conducting moisture. The 

 other tissues of the fibro-vascular system are regarded as modi- 

 fications of this tissue. In arriving at this conclusion, the 



