vi Contents. 



VA.Gr. 



A Coinparative .Study of Chlorophyll as occuiTing in some Alg;e, Vascular 



Cryptogams, and Phanerogams. By Gustav Mann. (Plate II.) 394 



Some Observations on Spiroijyra. By Gcstav Mann. (Plate II. 



Figs. 1-8) 421 



On a Method of Preparing Vegetable and Animal Tissues for Paraffin 

 Imbedding, with a few Remarks as to Mounting Sections. By Gustav 

 Mann 432 



Observations on Glands in the Cotyledons, and on the Mineral Secretions of 

 Galium Aparine, L. By Thomas Berwick, University of St Andrews. 

 Communicated by Dr John Wilson. (Plate III.) 436 



Notes on Recent Additions to the Flora of the Moffat District. By JOHN 



Thorburn Johnstone, Moffat 445 



On the Difficulty of ascertaining the Age of certain Species of Trees in 

 Uruguay, from the Number of Rings. By David Christison, M.D. 

 (Plate IV.) 447 



Notes on Tree Measurements, made Monthly at San Jorge, Uruguay, from 

 January 12, 1885, to January 12, 1890. By Charles E. Hall, of San 

 Jorge. (Plates V. and VI.) 456 



Report on the Progress of Vegetation at the Royal Botanic Garden, from 



July 1889 to June 1890. By Robert Lindsay, Curator 469 



Obituary Notice of Thomas Boyle Grierson. By J. Shaw, Tynron 479 



Proceedings, Miscellaneous Contributions, and Exhibitions 483 



Office-Bearers for Session 1889-90 483 



New Fellows and Associates 490 



List of Societies which exchange Publications 491 



List of Members 495 



Index 503 



