THE SCOTTISH MARINE STATfON AND ITS WORK. 219 



which had been flooded in 1855 owing to its outer wall 

 giving way. It has an area of seven acres, and there is a 

 narrow opening* leading to the sea, through which a vessel 

 drawing six feet of water can be navigated at about high 

 water. The late Duke of Buccleuch granted Dr. John 

 Murray a fifteen years lease of the quarry at the almost 

 nominal rent of 15s. per annum. 



/ I 



Old Granton Quarry. 



Fig 1. — Plan of Granton Quarry, the origrinal site of the Scottish Marine Station. 

 From a survey by Mr. H. .1. GifPord. The figures represent the depth in feet. 



Two large vessels, the " Ark " and the " Medusa," with 

 several rowing boats, made up the outfit, and still constitute 

 a most important part of the Station's appliances. The 

 former is a floating laboratory, and was moored in the 



