Structure and Division of the VegetaUc Cell. 219 



Fig. 16. Cell from a filament, the walls of which have been 

 swollen by endosmotic action. The nearly completed septum has 

 been detached from the waU, and is held in position merely by the 

 cell contents. 



Fig. 17. Cell which has been tumbled about, and whose contents 

 have been crushed. The chlorophyll bands are not represented. 

 Here also the septum has been displaced from the walls by con- 

 traction on crushing of the protoplasm. 



Notes on the Flora of the Islands of Colonsay and Oransay. 

 (Part II.) By Symington Grieve. 



(Read 14tli July 1881). 



When we read our jBrst notes on the flora of these islands, 

 which commence at page 66 of this volume, we expressed 

 the hope that we might be able during future visits to com- 

 plete the list of plants. We have now had four other 

 collecting excursions, and it is probable we have got a com- 

 paratively complete note of the whole flora, though doubt- 

 less some plants have escaped notice ; but if any visitors to 

 this interesting locality should find plants not on our lists, we 

 should esteem it a favour if they will send us specimens. 



Those we have noted have been most carefully verified ; 

 and we have to acknowledge, with our best thanks, the aid 

 we have received io this work from Mr Charles P. Hobkirk 

 of Huddersfield, and Mr Andrew Mofi'at of the Edinburgh 

 Naturalists' Field Club. But we must also place on record 

 the kindly interest manifested, and assistance given, by two 

 eminent botanists now dead. We refer to the late Mr H. 

 C. Watson, of Thames Ditton, and Mr F. M. Webb, of the 

 Edinburgh Herbarium. 



We have made detailed remarks regarding a number of 

 the plants upon the appended lists ; but let us add that 

 none are specially rare, though some are not very common 

 in Scotland, and we believe here reach nearly their ex- 

 treme northern limit. Such plants as Hyi)ericnm elodes, 

 Seutellaria galericulata, and S. minor are quite abundant ; and 

 we have discovered on Oransay a new station for Orchis 

 pyramidcdis, which was previously only known to exist in 

 the west of Scotland at one station on Colonsay. At neither 



