THE NAUTILUS. 129 



of life as to live for days in salt water, giving us good opportunity to 

 make drawings of them under the microscope. 



Another shell which we had looked upon as rare, and whose sculp- 

 tured whorls we had always admired, is the Scala ffrcenlnndica 

 (Perry). Last summer we found it in comparative abundance in one 

 locality. Our boat being out of repair, we made a number of hauls 

 from the ledges, well out toward the sea. One of us would take the 

 dredge out about one hundred yards from shore and drop it, while 

 the others on the rocks would laboriously pull it in. The haul thus 

 radiating from one spot would cover quite an area, varying of course 

 in depth. On this bottom, composed of quantities of fragments of 

 barnacles scraped from the ledges by the ice in previous winters, we 

 found a number of interesting northern species, among which was 

 the Scala above mentioned. The barnacle fragments formed a most 

 excellent protective background for this species, and it required 

 sharp eyes to pick them out after the material had been washed over. 



Associated with the Scala was the Menestho striatula (Couth.), 

 which was equally hard to pick out from among the broken shells. 

 As many as thirty specimens of Scala would be found in each haul 

 of the dredge, and the Menestho proved to be also common here. 



Here we also found the Bela bicarinata (Couth.) and a great many 

 of the Cylichna alba (Brown). 



One of the unexpected surprises occurred one day, when in mak- 

 ing a haul in deep water, our precious dredge caught in some 

 obstacle which came to the surface with great reluctance. It proved 

 to be a " gang " of lobster traps, which had been carried off into 

 deep water and so lost. It was duly recognized and claimed by one 

 of our men, who had lost it the previous winter. On the stones with 

 which each trap was weighted, we found many specimens of Chitons; 

 the Trachydermon ruber (Linne), the T. albus (Linne), and a few 

 Tonicella marmorea (Fabr.), also a number of Lepeta caeca (Miiller). 

 It is interesting to note, in relation to the last species, that Gould in 

 his " Invertebrata of Massachusetts," 1st edition, 1841, says: " Only 

 three specimens of this shell are yet known." This is repeated in 

 the edition of 1870. We have found it, however, fairly common. 



Another surprise in our dredging was to come upon tlie '' Dump 

 ing Ground " of the Bar Harbor Refuse Scow. On this spot Bar 

 Harbor has deposited its refuse for some years. The lighter material 

 being carried out by the tide and the heavier sinking to the bottom 



