and Laboratory Methods. 



1279 



The Marine Biological Laboratory at Cold Spring Harbor, L. I. 



The twelfth annual session of this laboratory will be held during the months 

 of July and August, of the present year, under the directorship of Professor C. B. 

 Davenport. The regular class-work will begin Wednesday, July 3, and will con- 

 tinue for six weeks ; the laboratory will be open from July 1 until August 24, 

 but investigators may make arrangements for using it from the middle of June 

 until the middle of September. 



Cold Spring Harbor is about thirty miles from Brooklyn, on the north shore 

 of Long Island. It is a deep, funnel-shaped inlet of Long Island Sound, with 

 steep, wooded shores, about five miles long, and one and a quarter miles wide at 

 its broad end, where it joins the sound. It is divided by a long sand-spit near its 



COLD SPRING HARBOR, WITH A VIEW OF THE EAST END OF THE LABORATORY. 



inner end into two distinct divisions, an inner basin about half a mile long, upon 

 which the laboratory is situated, and the outer harbor ; near the middle of the 

 western shore of the latter, Oyster Bay, a body of water as large as Cold Spring 

 Harbor, opens into it. 



The depth of the water in the harbor varies considerably. The mean range 

 of the tide is 7.o feet. The inner basin is gradually silting up, and exposes 

 about half of its bottom at every low tide for an hour or so. The depth of the 

 outer harbor, at low tide, is from 15 to 18 feet above the entrance of Oyster Ba} , 

 immediately below the entrance a long bar extends from the western shore, upon 

 which the water is from 6 to 10 feet deep at low tide. Beyond the eastern end of 

 this bar, which is marked by a small light-house, is a channel 72 feet deep. 

 Outside the bar the water deepens towards the sound. 



