1892] MARYLAND ACADEMY OF SCIENCES, 215 



in Furnace Branch*, near the " old furnace," and had 

 repeatedly noticed these moss-like creatures attached to 

 the submerged fragments of slag from the furnace, which 

 lay near the shore. For several years young zoologists 

 have been making excursions to this latter haunt of Cor- 

 dylophora as about the only one definitely known in the 

 reffion of Baltimore. 



The point from which visitors of the Furnace Creek 

 localities have usually obtained specimens is at the moutli 

 of a small southern tributary of that estuary, which flows 

 into the latter, about a hundred yards below the old fur- 

 nace. Among the residents of the section this inlet has 

 taken the names "Cinder Cove," or " Bat Cove," owing, I 

 judge, to the fact that across its mouth, which is only about 

 twenty feet in width and two feet in depth, a quantity of 

 fragments of brick and slag from the old furnace form a 

 rude dam or bridge, upon which one may cross the cove 

 at low tide, and which for convenience of reference I will 

 designate as Cinder Dam (Plate II, foreground). f This 

 structure at this date consists of an irregular mass, fifteen 

 feet in length, eight feet in width, and two or three feet in 

 depth. At the north end a narrow and relatively deep 

 channel has been eroded (Plate I) through which, during 

 ebb tide, the w^ater with which the reservoir-like cove has 

 become filled during flood tide, flows out with considerable 

 rapidity, —the bridge forming a sort of tide-dam. From the 

 time when I first saw this dam, nearly four years since, it has 

 not been materially changed in form or dimensions. Many 

 of the constituent fragments of slag are large and of very 



*Also called " Furnace Creek,"— the principal western tributary of Curtis Creek. 

 On its south bank, on^-half mile below the head of tide, stand the ruins of a colonia 1 

 iron furnace (shown in Plate I, upper left-hand corner). 



t The Maryland Academy of Sciences, with Mr. Quartley (photographer), and the 

 Deutsch Co. (lithgraphers), of Baltimore, have warmly seconded my attempt to 

 obtain a view of this oi-iginal Chesapeake locality for Cordylophora, which should 

 not only exhibit the chief physical characters of the animal's habitat at Cinder 

 Cove, but which should do ample .justice to its singularly picturesque svirround- 

 ing-s. 



