36 
‘Boston (Mass.) — American Academy of Arts and Sciences: Procee- 
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» — Society of Natural History: Proceedings Vol. XXVII 
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> — Minnesota Academy of Natural Sciences. 
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>» — American Museum of Natural History: Bulletin Vol. XL, 
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>» —— Microscopical Society: Journal, Vol. XII, Nr. 4, Vol. XIV, 
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» — American Philosophical Society: Proceedings Vol. VI, 
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XXXVI 155—157. 
» — Wagner Free Institute of Science: Transactions 
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Rochester (N.-Y.) — Academy of Science. 
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St. Louis (Miss) — Academy of Science. 
» — Missouri botanical Garden: Ann. Report 1890; 4. Report 
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1895 — 96. 
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Tufts College (Mass) — Studies No. 5. 
