192 GLAUCUS ; OR, 
fore, will not come amiss here. They shall be such 
as anyone can put into practice, who goes down to 
stay in a lodging-house at the most cockney of 
watering-places. 
Buy at any glass-shop a cylindrical glass jar, some 
six inches in diameter and ten high, which will cost 
you from three to four shillings; wash it clean, and 
fill it with clean salt-water, dipped out of any pool 
among the rocks, only looking first to see that there 
is no dead fish or other evil matter in the said pool, 
and that no stream from the land runs into it. If 
you choose to take the trouble to dip up the water 
over a boat’s side, so much the better. 
So much for your vase; now to stock it. 
Go down at low spring-tide to the nearest ledge 
of rocks, and with a hammer and chisel chip off a 
few pieces of stone covered with growing sea-weed. 
Avoid the common and coarser kinds (fuci) which 
cover the surface of the rocks; for they give out 
under water a slime which will foul your tank: but 
choose the more delicate species which fringe the 
edges of every pool at low-water mark ; the pink 
