220 EESPIRATION. 



to save tlieir lives;" making gastronomical use of 

 them. The scalloped Cockles of Paignton we had 

 known only by reputation ; we tried them in this way, 

 and found them worthy of their fame. 



Mr. Kingsley has favoured me with the follow- 

 ing observations on the respiration of these species : — 

 " Whether Mr. Clark be right or not in saying that 

 the water is received through both siphons, he is right, 

 against Mr. Alder and Mr. Cocks, in saying that it is 

 expelled through both. What I see is this. From 

 the small anal siphon, the water is expelled in steady 

 periodic currents, forming a ripple (under three inches 

 of water) several inches off. From the large siphon 

 it is expelled seldom and capriciously, in a violent jet ; 

 give ten a minute to the small, one in four or five 

 minutes to the large. If disturbed, they commonly 

 jet the water from the large tube. 



" The large siphon opens periodically, — I think 

 answering to the jets of the small siphon, — till it is 

 quite circular. The small one almost always keeps 

 an oval form : I can see no inward current in either. 

 Clark is right in saying that they lie long without 

 using the siphons ; sometimes they are not out for a 

 whole day. 



" What is the use of the fringes ? They cannot 

 strain the loater in so large an animal as this Cockle, 

 which, when the siphon is open, has a J-inch pipe 

 fully patulous." 



THE EOUGH SYEINX. 



When once we have begun to look with curiosity 

 on the strange things that ordinary people pass over 



