54 



Notes on the Preceding Paper. 



Gosse had completed his researches. Unfortunately, in the 

 early part of December the pond was cleared out, and I could 

 with great difficulty find a few bits of the Anacharis, and still 

 fewer live specimens. I however sent some to Professor 

 Williamson, of Manchester, to whose labours the last edition of 

 Pritchard is so highly indebted. 



It will be most convenient if I comment on Mr. Gosse's 



Fio. 1. 



statements in the order in which they occur. After attentively 

 watching some dozens of the animals in an expanded state. I 

 have never seen anything to justify the idea of the disk being 

 bilobed, with a tendency to further division, and having a 

 " striking resemblance to the expanded wings of a butterfly." 

 The second of the annexed sketches is taken from the Marvels of 



