Tablt 5. Deptht, dlneaalons, and materlala used la the construction of sea la.-prc ■ nssts Is th? Ocquco-: HiTrr 

 (Stations IL to 111). (All depths and dl-TDnslons In lnc>.es. Eotton t:'pe s— nbols: "?" - len -^avel, 3/l6" to 

 3/8" In dlaioeter; 11' - marble eravol, 1/2° to 1" In dla.Tet?r; "E" - e-;T travel, 1 and 1/^" to 2 and 1/2" In dl- 

 anater; "B" - nibble; "S" - sand. All botton types listed in order of do.iinanee, ) 



'■^Z Upstream rla of nest poorly defined or not elaborated durin" nest construction. !l:\t»rlals llatei 

 ape botton type IjirTsdiatelv upstrean from nest proper. 

 v2/ Uaan dlsaatsr of asToatrical nests Included in avora^. 



222 



