Iviii Procccdirujs of the Botanical 8ociety 



Thursday, 10/A March 1881.— Dr Thomas Alexander 

 GoLDiE Balfour, Vice-President, in tlie Chair. 



The following Candidates were elected Foreign and Corre- 

 sponding Members : — 



Dr JoAQuiM MoNTEiRO Caminhoa, Professor of Botany and Zoology, 



Rio Janeiro. 

 JoAO Barboza RodriCxUES, Secretary and Professor- Adjunct in the 



Imperial College of Pedro II., Rio Janeiro, Brazil. 



The following Candidate was elected a Non-Eesident 

 Fellow : — 



Robert Halliday Gunning, A.M., M.D. Edin., Palmeira, Brazil. 



The following Communications were read : — 



I. On the Moiyhology of the Pitchers of Cephalotus follicularis. 



By Professor Alex. Dickson. 



II. Note on the Physical Effects produced hy the Floating Power 



of some of the family FiicacecB as observed at the Strand 

 between Colo7isay and Oransay, Augiist 25, 1880. By Mr 

 Symington Grieve. 



Towards the end of last August we were on a visit to the island 

 of Colonsay, and on the 25th of that month Ave determined to make 

 an excursion to the island of Oransay, which is divided from 

 Colonsay by a beautiful sandy strand that varies in breadth from 

 half a mile to a mile and a quarter. At ordinary full tides there is 

 a depth of water upon the strand of from six to nine feet, and there 

 is a period of from three to six hours each tide during which the 

 strand is dry. 



The sand is mixed with immense quantities of comminuted shells, 

 which gives it a white appearance; and the inner part of almost 

 every bay that indents the coast has similar tracts, whde the pro- 

 montories are rugged, and their shores strewn with stones, some 

 of which are water-worn, Avliile others bear evidence of having been 

 recently detached from the neighbouring rocks, and on these stones 

 there is a luxuriant growth of sea-weed. 



To arrange for an excursion to Oransay it was therefore necessary 

 to know at what hour the tide woidd recede from the strand, so that 



