3§4 



The Scottish Naturalist. 



Rather more than half the space is devoted to introductory chapters dealing 

 with modes of collecting and preserving specimens, and the biological characters 

 of the Algce, including a chapter on " Notable Phenomena," one on "The 

 Dual Hypothesis," and another on " Classification." From these we observe 

 that the author adheres steadfastly to the views that Lichens are not formed by 

 the union of Algae and Fungi, and that the classifications proposed in recent 

 years are not improvements on " the old artificial arrangement of the Algae." 



There is a full enumeration of the British Fresh-water Algae, within the 

 limits already noted, with references to the figures in the author's large work, 

 " The British Fresh-water Algae." Synonymes are wisely omitted. The 

 thirteen plates "illustrating all the genera" will greatly facilitate the use of 

 the book by those for whom it is intended. 



That the book will do good service in attracting workers to this field we 

 cannot doubt. The controversial questions will not affect its usefulness in this 

 respect ; and the evidence on both sides of each question must be investigated 

 by advanced students of the group by reference to the original monographs 

 and papers. 



ADDITIONS TO LIST OF SCOTCH DIS0OMT0ETES. 



By Prof. Jas. W. H. Trail, A.M., M.D., F.L.S., 



Since the publication of my Revision in this Journal I have 

 found a few additions which deserve to be noted. They are 

 numbered below in the order they should take in the " Re- 

 vision." 



ma. Hymenoscypha amenti (Batsch), on rotting catkins 

 of Salix aztrita, Den of Maidencraig ! near Aberdeen, 

 in January. 



113. H. eburnea (Rob.), on corms of Arrhenatherum avena- 

 cemn, in Braemar ! in April ! 



172a. Lachnea mirabilis (Borszc.) PhilL, growing in 

 clusters among grass on the bank of the Dee at Ballater ! 

 in April ! This is beautifully figured by Wettstein under 

 the name Anthopeziza Winteri (Verh. Z. B. Gesell. Wien., 

 1886, p. 383, t. 16). Mr. Phillips (Grevillea, 1890, p. 

 83), refers it to L. mirabilis, with reference to the original 

 figure (bad) and description, copied in Cooke's Myco- 

 graphia, 98. 



236a. Tapesia sanguinea (Pers.), On dead wood of Rosa 

 canina near Ballater ! and of Populus tremula in Brae- 

 mar ! in April ! 



317a. Propolis Rosse, Fckl., on dead twigs of Rosa canina, 

 near Ballater ! in April ! 



