58 TlIK JOUIiNAL OF bota:n'y 



CuscuTA europ.t:.! L. in Middlesex. I collected specimens of 

 this plant for a drawing for The. Cambi'id(/e Bn'fish Flora in July 

 of this year growing near the Albert Bridge, Old Windscjr. Its hosts 

 were JJrtica dloica and Huniulus Lupiolus. — Edwahd Walteii 



HUNNTBUN. 



REVIEWS. 



The Anatomii of Woody Plants. By Edward Charles Jeffrey. 

 With 306 Illustrations. University of Chicago Press, Chicago. 

 Pp. X & 478. Price «4 October, 1917. 



This work by the well-known Professor of Plant Morphology in 

 Harvard University has been expected with much interest. The 

 expression in the Preface, " woody or so-called vascular plants," 

 suggests that the two terms are synonymous, and, as a matter of fact 

 herbaceous forms are by no means neglected, though special prominence 

 is given to the woody types, in accordance with the author's belief in 

 their primitive nature. 



Great stress is laid throughout on the supjwsed " Canons of Com- 

 parative Anatomy " formulated in Chap. xvii. It is even stated in 

 the Preface that " any conclusions not in harmony with them have 

 ordinarily not been considered" (with certain exceptions). This at 

 once indicates the highly deductive character of the treatment, though 

 the word "induction " is often used. The book, in fact, is essentially 

 an able exposition of the views of Prof. Jeffrey and his school ; it will 

 therefore be read with the most advantage by those Avho are in a 

 position to read critically. 



The general plan of the book is as follows : — After a short chapter 

 on the cell, we come to the tissue-systems. Next follows a chapter on 

 wood in general, succeeded by four on the secondary wood and one on 

 the phloem. The epidermis and the fundamental tissues occupy 

 Chaps, ix. and x. Then we have a chapter on the definitions of the 

 organs, succeeded by three on the root, stem and leaf, respectively. 

 Then follow two cha])ters, which it is a welcome surprise to find in an 

 anatomical text-book, on the microsporangium, and on the mega- 

 sporangium and seed. We then arrive at the important Chap, xvii, 

 which lays down the author's " Canons of Comparative Anatomy." 

 The arrangement of the next 12 chapters is- S3'stematic, from the 

 Lycopodiales to the Monocotyledons. Chap. xxx. is on anatomical 

 structure and climatic evolution : Chap. xxxi. treats of the evolutionary 

 principles exhibited by the Composita?, and the last chapter is devoted 

 to anatomical technique. The arrangement involves a certain amount 

 of repetition, which, liowever, serves to bring out the points on which 

 the author desires to lay special stress. 



In defining the tissue-systems the author returns to Sachs's old 

 divisions, the epidermal, fibrovascular and fundamental systems. The 

 stele, so jirominent as an anatomical unit in the woi'k of the last 

 quarter of a century, thus disappears ; it is rarely mentioned and is 

 not to be found in the index. This striking reversion in terminology 

 is intimately connected with the author's theory that the- pith is of 



