248 W. C. ALLEE. 



of deep inshore water. Being a man-made habitat it is not, 

 strictly speaking, a part of the rock series and is included in 

 that series because it does give approximately the same condition 

 that would be found on the rocky pillars just mentioned. 



The succession of forms in this association can readily be 

 studied. Glass slides placed under wharfs furnish a convenient 

 method of finding the first pioneers to be expected. Observation 

 of the growth of communities on new non-creosoted pilings and 

 comparison with those on middle aged and old pilings would 

 give the whole story for the wharf pilings, since they will of 

 course never become a My a association, as a rock- Amaroscium 

 association may, or in the same way that its rock pillar proto- 

 type might. 



In addition to such a study as this and to the studies of the 

 ecology of individual species, in order to describe completely the 

 littoral ecology of this region, studies should be made in the late 

 autumn, early spring and in late spring or early summer. This 

 last is particularly needed to round out our knowledge of the 

 physical and faunistic conditions in these associations during 

 the spring reproductive period. 



VI. BIBLIOGRAPHY. 



I. Special References. 

 Pratt, H. S. 



'16 A Manual of the Common Invertebrate Animals. McClurg, 737 pp. 

 Text figures. 

 Sumner, F. B., Osburn, R., and Cole, L. J. 



'11 A Biological Survey of the Waters of Woods Hole and Vicinity. Bull. 

 Bur. Fisheries, 31. Physical and Zoological, Pt. I., pp. 1-443. Contains 

 distribution charts and bibliography. A Catalog of Marine Fauna, Pt. 

 II., pp. 547-795. Faunal bibliography. 

 Verrill, A. E. and Smith, S. I. 



'7i-'72 The Invertebrate Animals of Vineyard Sound and Adjacent Waters. 

 Rep. U. S. Fish Comm., 1871-72 (1874), pp. 295-778. Plates. (This 

 report may still be obtained from Dr. Verrill.) 



II. General References. 



(Those starred have not been consulted directly.) 

 Adams, C. C. 



'13 Guide to the Study of Animal Ecology. Macmillan, 183 pp. Bibliography. 

 Allee, W. C. 



'11 Seasonal Succession in Old Forest Ponds. Trans. III. Acad. Sci., 4, pp. 1-6. 

 '19 Note on Animal Distribution following a Hard Winter. Biol. Bull., 36, 

 pp.. 96-104. 



