6 
During three weeks of June, 1915, many experiments and ob- 
servations were made at the Marine Bioliogical Station, Woods Hole, 
Massachusetts. Some of the problems attacked were the effect of 
high concentration of salts on the viability of Fundulus; the effect of 
highly concentrated sea water on the development of the embryo of 
Fundulus heteroclitus; the water tiger as food for Fundulus heteroc- 
litus; adaptation of Fundulus diaphanus to salt| water; acclimization 
of the tadpole to salt water; habits of the migrating Pundulus; and 
effect of varying the flow of water on the activity of Fundulus heter- 
oclitus. The problems named will be further discussed in later pap- 
ers, but the most important facts germane to the present discussion 
will be incorporated in the pages following in appropriate places. 
It is a pleasure to acknowledge the kindness of Dr. F. R. Lillie, 
Dr. Gilman A. Drew and Mr. George Gray of the Marine Biological 
Laboratory in placing at my disposal the laboratories and supplies of 
their institution. The excellent library was of great help, also. 
At the suggestion of Dr. T. J. Headlee, a trip was made to 
Atlantic County early in July to investigate the conditions in virgin 
territory undrained by human agents. Marsh land near Beach 
Haven, Tuckerton, and Atlantic City was studied and the dispersa! 
of fishes noted. The Tuckerton Creek and many creeks near it also 
were studied. 
At the Bonhamtown meadows work was intensified on three 
permanent pools, additional studies being made of conditions in many 
other small and large pools and on the activity of the fishes in the 
ditches and along the shores. 
These pools were surveyed by Mr. R. B. Hiller, an engineering 
student of Rutgers College, and were sounded at intervals. Collec- 
tions were made from the pools and from ditches and larger pools 
by means of a 20-foot minnow seine and several small dip-nets. 
Table of collections with species of fish identified 
Number of Fundulus het. Cyprinodon var. Apeltes Anguilla. 
collections 
29 1581 105 19 22 
Although FPundulus majalis did not appear on the Bonhamtown 
marshes, the species is fairly well distributed along the New Jersey 
coast, running in and out with the tides, confining itself to the salt 
and brackish water and not migrating into the shallows. Because 
of this habit, it cannot enter largely into the extermination of the 
salt-marsh mosquito. 
Besides the fish named, Lucania and Menidia were collected a't 
times when the tides were especially high. Ampng the Arthropoda 
collected from the pools under observation were Dytiscus and its 
larvee the water tiger, Crangon vulgaris and Palaeomonetes (shrimps) 
and Notonecta.. Many small unidentified myriapods were dug up 
