280 Mr. Henry B. Brady on 
distance at this place is made up of reedy ground traversed by 
channels interspersed with pools covered by the tide at high 
water. 
2. Frith of Forth.—This material was dredged in three to 
four fathoms, twenty yards or so from the pier at Bo’ness. It 
was a soft slimy mud, the water being brackish, but not 
strikingly so. That the Rhizopodal fauna presents a closer 
approximation to that of the laminarian zone than most of the 
localities investigated, is readily explained by the wide com- 
munication with the open sea. 
3. Seaton Sluice.—A. sort of harbour at the débouchement of 
the Seaton Burn, about six miles north of the Tyne. The 
... * For a detailed account of the zoology of this interesting locality, see 
Trans, Tyneside Nat. Field-Club, vol. vi. p. 95. 
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