52 THE PHYSICAL FEATURES OF CALVERT COUNTY 



Glenn, L. C. Pelecypoda. 



Md. Geol. Surv., Miocene, pp. 274-401, plates Ixv-cviii, 1904. 



HoLLiCK, Arthur. Angiospermse. 



Md. Geol. Surv., Miocene, pp. 483-486, Fig. 1, 1904. 



Martin, G, C. Malacostraca, Cirripeclia, Mollusca (except Pele- 

 cypoda), Brachiopoda, Vermes, Eadiolaria. 



Md. Geol. Surv., Miocene, pp. 94-97, 130-274, 402-404, 430, 447-459, plates 

 xxxiii-xxxiv, xxxix-lxiv, cix, cxviii, cxxx. 



Shattugk, George Burbank. Geological and Paleontological Ee- 

 lations, with a Eeview of Earlier Investigations. 

 Md. Geol. Surv., Miocene, pp. xxxiii-cxxxvii, 1904. 



Ulrich, E. 0. Hydrozoa. 



Md. Geol. Surv., Miocene, pp. 433-438, plate cxxi, 1904. 



• and Bassler, E. S. Ostracoda, Bryozoa. 



Md. Geol. Surv., Miocene, pp. 98-130, 404-429, plates xxxv-xxxvii, cix-cxviii, 

 1904. 



Vaughan, T. W. Anihozoa. 



Md. Geol. Surv., Miocene, pp. 438-447, plates cxxii-cxxix, 1904. 



1906. 



Clark, William Bullock and Mathews, Edward B. Eeport on 

 the Physical Features of Maryland. 



Md. Geol. Surv., vol. vi, part i, pp. 27-259, plates i-xxiii, 1906. 



Clark, Wm. Bullock, Hollick, Arthur, and Lucas, Frederic 



A. The Interpretation of the Paleontological Criteria. 



Md. Geol. Surv., Pliocene and Pleistocene, pp. 139-152, plates xxxii, xxxiii, 

 1906. 



Clark, W. B. Crustacea, Mollusca, Coelenterata, Protozoa. 



Md. Geol. Surv., Pliocene and Pleistocene, pp. 173-210, 213-216, plates xli-lxvi, 

 1906. 



Hay, 0. P. Eeptilia. 



Md. Geol. Surv.. Pliocene and Pleistocene, pp. 169, 170, pi. xl, 1906. 



Hollick, Arthur. Pteridophyta, Spermatophyta. 



Md. Geol. Surv., Pliocene and Pleistocene, pp. 217-237, plates Ixvii-lxxv, 1906. 



Lucas, F. A. Mammalia. 



Md. Geol. Surv., Pliocene and Pleistocene, 157-169, plates xxxiv-xl, 1906. 



