206 THE NATURALISTS' DIRECTORY. [U. S. & CAN, 
5006 Sias, Solomon, A.M., M.D., Schoharie, N. Y. Geol., Palceo... 
Meteo., Ast. C.* 
5007 Sickels, Prof. Ivin, M.D., 17 Lexington Ave., New York 
City.* 
5008 Siebel, J. E., Prof. Chem. and Tech., Zymotechnic Coll. .Chi- 
cago, 111. Geol., Min., Chem., Phil. C.? 
5009 Siebenthal, C. E., Bloomington, Ind. Phys. and Strat. Geol. r 
5010 Siemon, Wm. F., 69 E. 130 St., New York, N. Y. Geol., 
Min., Chem., Photog. C. Ex.* 
5011 Sigerfoos, Charles P., Univ. Station, Charlottesville, Ya. 
ZooL, Gen. Biol., Morph., Emb., Vert, and Invert. Anat., 
Hist. 
5012 Sigsbee, Charles D., Commander U. S. Navy, Hydrographer, 
Navy Dept., Washington, D. C. Practice and Economy 
Deep- Sea Sounding, Dredging, etc.* 
5013 Silliman, J. M., Prof. Mining Eng. and Graphics, Lafayette 
College, Easton, Pa. Min., Mic. 
5014 Silliman, Wyllis Augustus, Ph.D , Clarkson, N. Y. F. W. 
TurbellariaJ 
5015 Silver, Wm. J., M.E., 143 W. North Temple St., Salt Lake 
City, Utah. Metall ., Phys., Elect. 
5016 Simek, Bohumil, State Univ., Iowa City, Iowa. Mollusca, 
esp. Ancylus and Succinea, Fruits and Seeds of X lowering 
Plants. C. Ex.* 
5017 Simmons, Geo. O., 352 Gates Ave., Brooklyn, N. Y. Min., 
Lithol. Proprietor of the "Diamond and Students' com- 
plete Mineral collections." Prepares collections for 
schools and private parties. Will purchase or ex. fine 
crystallized minerals, European especially. Correspon- 
dence desired. Minerals sent on approval.* 
5018 Simmons, J. W., Owosso, Shiawassee Co., Mich. Phoen. 
Bot., Vert., Geol., Lithol., Inorg. Chem., Phys., Elect., 
Mic., Meteo., Ast, Zool , Anat., Orn: Ool., Tax., Eat: 
Lepid, C. Ex.* 
5019 Simon, H. L., Lancaster, Pa. Min.. Ool., Geol., Arch. C. 
Ex.* 
5020 Simon, Wm., Ph.D., Prof. Chem., 1348 Block St., Baltimore, 
Md. Chem., Min. C.* 
5021 Simonds, Arthur B., Harvard Univ., Cambridge, Mass. 
Systematic Bot., Morphol.. Dist. of Plants. Anth. C.? 
5022 Simonds, Frederic W., Ph.D., Prof. Geol., Univ. of Texas, 
Austin, Tex. Invert. Palceo., Strat. Geol., Min. C. Ex.* 
5023 Simonds, O. C., Buena Park, 111. Phcen. Bot* 
5024 Simonton, L., Lebanon, Warren Co., Ohio. Palceo., Geol., 
Anth., Arch., Eth. C. Ex. Lower Silurian fossil and 
Arch. spec, for fossils and rare Arch. spec. Trilobites 
from other than Lower Silurian especially wanted. Cor- 
respondence solicited.* 
5025 Simpson, Chas. T., Dept. Mollusks, U. S. Nat. Mus., Wash- 
ington, D. C. Con., Bot., Gen. Nat. Hist., Moll.* 
5026 Simpson, Geo. B., New York State Mus., Albany, N. Y, 
Invert. Palceo., Invert. Anat.* 
