SEA-FISHERIES LABORATORY. 359 



shells are scattered throughout. On examination of this 

 deposit several small annelids and one large Nereis were found. 

 Judging, very roughly of course, by the height of the 

 respective layers of sand and mud which formed, after shaking 

 up in a glass tube, the proportion of mud to sand appears to 

 be about 5 to 1. In a wet condition this deposit is exceedingly 

 viscous and sticky, and when dry assumes the aspect of a fine 

 powder from which the larger quartz grains stand out distinctly. 



XYI. [11.] 26/2/13. 15 miles S.W. of Morecambe Bay Ship. 



This sample is a most heterogeneous one. In the first 

 place it is composed of small stones, shells, quartz sand, and 

 very finely-divided mud. The stones are not very common, 

 and vary considerably in size. They are all well rounded, 

 but, as in one or two cases growths of zoophytes are found 

 upon their surfaces, the erosion could not have taken place 

 since they were deposited in their present position. Com- 

 minuted shells make up a considerable proportion of the total 

 mass, and are of all sizes from complete valves down to the 

 minutest speck. Tellina, Mactra, Nucula, Pecten, Venus, and 

 Cardium seem to be the commonest genera present. 



The quartz grains, forming the sand, are all pretty well 

 rounded and worn, but many angular pieces are also present. 

 A fair number of these are coloured by iron oxide. Magnetite 

 and small pieces of what appears to be slaty material are 

 found — the former in fair abundance. Throughout the whole 

 deposit a fine mud is found — in fact this sample resembles 

 pretty closely the second deposit described from the Morecambe 

 Bay Ship. The proportions of quartz sand and mud, however, 

 are more nearly equal in this case. The constitution of the 

 mud appears to be very similar to that described for previous 

 samples. 



In this deposit a great number of terebellid and sabellid 



