120 J. BURTON ON "breaking OF THE MERES." 



occurrence of several favourable circumstances which does not 

 frequently arise : possibly some special type of weather and some 

 narrow range of temperature at a particular season would be 

 features in the required conditions. 



Unfortunately I have not, after repeated efforts, found any 

 medium for mounting these algae satisfactorily. The refractive 

 bodies disappear altogether after a longer or shorter time. 



[An example of the Totteridge specimen, nearly as in life, was 

 exhibited ; also a drawing by Mr. Hammond of the one found at 

 "The Welsh Harp," and drawings by Mr. Akehurst and Mr 

 Burton representing both species.] 



Journ. Quekctt Microscopical Club, Ser. 2, Vol. XI., No. 07, November 1910. 



