THE OREGON NATURALIST. 

 EASTERN DEPARTMEN I'. 



73 



AMAROECIUM. 



CONDUCTED BY THE ASSOCIATE EDITOK, 



CHAT. 



The editor owes his sinceie apologies to the 

 many readers of the Oregon Naturahst for the 

 failure of the department to appear in the April 

 issue. However sickness is a matter that 

 attacks each and all of us unexpectedly and 

 for which we are not responsible. 



The editor will carefully review any articles, 

 magazines, etc. fowarded, and comments u|ion 

 same may appear from time to time in this 

 department. 



We are pleased to recognize the reception 

 of a charming monograph "The Electric-light 

 Bug or Belostoma" by Theodore William 

 Schaefer, M. D. Kansas City, Mo. The mat- 

 ter is carfuUy written in a scientific manner 

 and his application of the bug to medical 

 science, with the deductions drawn are of con- 

 siderable merit. 



If you want a definite system of work Cf 

 want your notes incorporated in a scientific 

 compilation, join the Oologisls Association. 

 Full particulars from President Isador S. 

 Trostler, 4246 Farnham St. Omaha, Neb. or 

 from the Eastern Editor. 



Articles on Osteology, by "Ossa" begin next 

 month. 



Aniaroecium or "sea pork" was very common 

 at some wharves. It resembles a chunk of 

 gelatine as much as anything I can think of. 

 The specimens, when fresh from the water, 

 vary very much in color. There are some 

 colored white, others different shades of red 

 and still others a greenish yellow. In preserv- 

 ing liquid these colors bleach out. 



MYTILUS EDULIS. 



This common mussel grows in large colonies 

 on the spiles usually near the surface. The 

 specimens in these colonies are generally small. 



Farther down are found the old mussels with 

 their shells covered with Serpula tubes, small 

 Metriduims, Crepidulas, and various other 

 things. 



These old and large mussels and sometimes 

 some of the smaller ones are inhabited by a 

 little parasitic crab which I shall treat of later. 



CREPIDUI.A. 



Did you do your duty with your notes on 

 the Hawks and Owls? 



For a few months the Eastern Editor will be 

 located at Woods Holl, Mass. All mail per- 

 taining to Eastern Department, should be ad- 

 dressed to him at that place. 



SPILE SCRAPING AND SOME OF THE 



MARINE INVERTEBRATES 



OBTAINED BY IT. 



(Continued from Page 42.) 



Crepidulas were often found on the spiles. 



