246 THE JOURNAL OF BOTANY 



appeared in the interval, and it was supposed that the Species 

 Genera et Onliiies had been finished. Now cotnes the fourth and 

 final part as a last supplement, and with it an index, which not 

 only refers to the last few parts and also to the Analecta and 

 other works on Floridece. 



The first division of this volume deals with the affinities of the 

 Floridece and the views of authors on the connection between this 

 group and representatives of lower groups of alg^. Tnis is followed 

 by (ii.) a treatment of the genus Callopkyllis, giving the character- 

 istics of the subdivisions into which the species fall, with notes on 

 certain plants and on the work of other authors. A short note on 

 (iii.) Micruccelia follows, and another (iv.) on ChiDiipia. Chylocladia 

 catenata forms the subject of division v., being placed by the author 

 in a subdivision Endodictyon of the genus Chylocladia. 



The next division (vi.) consists of a lengthy treatment of 

 (irracilaria, which genus he divides into four main groups — Macro- 

 cystidece, Microcystidem, Platycystidea, and Plectocystidece, depending 

 on the size and position of the thallus cells as seen in transverse 

 section. Sixty-one species are enumerated, including more than 

 one that is new. Two new species of Ciirdicea are next described 

 (vii.), one from Australia, collected by the late Miss Hussey, and 

 one from ISlew Zealand, sent by Mr. K. M. Laing. 



Division viii. treats of plants which have been placed under 

 Nizzophlea and Dasyphlea ; followed by further details on Enduyenia 

 (ix.), a new genus described in Analecta, Continuatio iv. Another 

 new genus, Hitsseya, is next described, allied to Chondria (x.). 

 It contains one species, H. austral is. A third new genus is founded 

 in xi., Mlcrogowjriis, allied to Ehodyinenia, the species for which it 

 was created being M. phyllophoroides, from Australia. Tlie last 

 section ot" this work (xii.) is devoted to a few remarks on certain 

 species of Floridea which are somewhat ambiguous — Cordylecladia 

 conferta, Delesseria Bartoni(B, Thysanocladia oppositifolia, Grateloupia 

 acuminata, and Grateloupia girjantea. 



The index referred to above concludes this book, three-fourths 

 ot" which were seen in type by the aged author, whose untiring 

 energy and wide knowledge have done so much for the study of 

 phycology. E. S. B. 



Morphology of Spermatophytes. By John M. Coulter, Ph.D., and 

 Charles J. Chamberlain, Ph.D. 8vo, pp. x, 188, with 106 

 figures. Appleton & Go. New York. Price not stated. 1901. 



The title of this book is misleading. As it stands on the shelf 

 it shows only the comprehensive statement " Seed-plants." But 

 though we may condone a somewhat brief and vague statement on 

 the back of a book, we expect the title-page to give a fair indication 

 of its contents. The preface does not help, but the "Contents'" 

 inform us that the present volume is Part 1., and deals only with 

 Gymnosperms, the incomparably larger group of Angiosperms 

 being presumably left for future treatment. Certainly the Gymno- 

 sperms afford scope enough and to spare for one book, and we 



