+ University of California Publications in Zoology [ Vou. 14 
has necessarily been much less thorough than that of the navigable 
waters. 
Even less attention has been devoted to the littoral (intertidal) 
zone, though collecting parties visited the following points and ob- 
tained considerable material: Bonita Point (piles of pier and between 
tides on shore), Presidio shore, Sausalito (piles of pier and on beach), 
Red Rock, Richmond, Key Route pier (off Oakland). 
This limitation of the scope of our collecting operations has resulted 
from the inadequacy of the force available for such work, as well as 
from the necessity of restricting the amount of material accumulated 
for subsequent examination. It was early decided that we must resist 
the temptation, to which so many collectors yield, of continuing indefi- 
nitely the gathering of specimens, without regard for the likelihood 
of compiling any scientific results of value. 
It is fully realized, however, that a complete biological survey of 
these waters requires the exploration of certain fields as yet scarcely 
touched, and it is hoped that some of the more important of these 
gaps may be filled in before the preparation of the final report. 
Certain special investigations were undertaken, with a view to 
bringing our work into more immediate relation with the local fisheries 
interests. Several trips were made, for example, to the oyster beds 
of the Morgan, M. B. Moraghan and Darbee-Immel oyster companies, 
in the southern parts of the bay. We must here acknowledge the 
courtesy of representatives of these various companies, who provided 
us with every facility for the work. At each of the beds tow-net hauls 
were made and samples of the water, of the bottom, and of the oysters 
themselves were brought away. Further water samples for titration 
have likewise been kindly supplied us by the Morgan Oyster Company 
at regular intervals throughout about ten months. 
Mr. Johnston, Fisheries Expert of the ‘‘Albatross,’’ has made 
many seine hauls, chiefly in that part of the bay lying nearest to the 
Golden Gate. He has likewise made numerous visits to the fish mar- 
kets of San Francisco, recording the occurrence of the various mar- 
ketable fishes at different seasons, and frequently the prices at which 
they were sold. Mr. Johnston furthermore accompanied the trawling 
steamers of the A. Paladini Company on a considerable number of 
fishing trips outside of the bay during the latter half of 1912, securing 
abundant records of the catch and in many eases specimens of interest. 
It must be stated, however, that thus far a larger share of the 
efforts of the scientific staff has been devoted to the more fundamental 
