Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 545
ar 1846 (the materialshaving been furnished by the geological researches of SirR. H. Schombnrgk), 39 species of Polycystina had beenestablished by Prof. E.: but in the Barbadoes deposit, he hasdetected no fewer than 282 forms which he considers to bespecificaRy distinct, besides 25 species of…
Microscopy
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