SEA-FISHERIES LABORATORY. 361 



XYIII. [18] 26/5/13. Off Blackpool (North Shore). 



Several samples were examined from this station, each 

 and all of them proving to be of the same composition. By 

 far the greatest part of this deposit consists of pure quartz 

 sand, the grains of which are very uniform in size. They are 

 well polished and rounded, a large proportion of them being 

 stained by oxide of iron. Particles of magnetite are commonly 

 distributed throughout, as well as a few pieces of what appears 

 to be a micaceous sandstone. The organic constituents are 

 formed of comminuted shells of Tellina, Donax, Scrobicularia, 

 and Mactra, but these pieces are so minute as to make identi- 

 fication a matter of considerable difficulty. Echinus spines 

 are fairly common. 



XIX. [22] 29/5/13. 6 miles N. of Great Ormes Head. 



This deposit is made up for the most part of well-rounded 

 quartz grains. They are considerably larger, on the whole, 

 than those of any previously described samples. A fair 

 proportion of them are coloured by iron oxide. Magnetite is 

 pretty common. Shell fragments and particles are common. 

 Few of them can be recognised, but the following is a list 

 of those identified : — Cardium, edule, Tellina, Venus, Mactra, 

 Scrobicularia, Donax and Purpura. Besides these shells echinoid 

 spines are fairly common ; one small Spatangus was obtained, 

 and a few worm castings. Small stones are found here 

 and there, but they are rare. A small proportion of mud is 

 also present, but it is hardly noticeable except as a very thin 

 film lying on the top of the sample after the latter has been 

 standing at rest for some time. 



XX. [10] 26/2/13. 10 miles N. of Great Ormes Head. 



In passing over the four miles which lie between tins 

 station and the last one (6 miles N. of Great Ormes Head), i! is 

 evident that the area of line sand has been left behind at am 



