. The American journal of science and arts . to d. Spiculse of Spongilla or fresh-water sponge. Fig. 19, a, h. Probably spiculse of another species of Spongilla. ^,group of three individuals. Fig. 20. Amphidiscus rotula of Ehrenberg, probably derived froma Spongilla. Fossil at West Point, near Boston, Wrentham, &c., alsoin South America. Fig. 21 to 23. Siliceous bodies of organic origin, found with fossilfresh-water infusoria. Fig. 24. Dictyocha Ehr., common among fossil marine infu-soria in the infusorial stratum of Virginia at Richmond and Rappahan-nock cliffs. Fig. 25. Fragment of
. The American journal of science and arts . to d. Spiculse of Spongilla or fresh-water sponge. Fig. 19, a, h. Probably spiculse of another species of Spongilla. ^,group of three individuals. Fig. 20. Amphidiscus rotula of Ehrenberg, probably derived froma Spongilla. Fossil at West Point, near Boston, Wrentham, &c., alsoin South America. Fig. 21 to 23. Siliceous bodies of organic origin, found with fossilfresh-water infusoria. Fig. 24. Dictyocha Ehr., common among fossil marine infu-soria in the infusorial stratum of Virginia at Richmond and Rappahan-nock cliffs. Fig. 25. Fragment of the preceding. Fig. 26. Dictyocha speculum, Ehr., with the preceding. Fig. 27 and 28. Siliceous bodies, found with the preceding. Fig, 29. Binary, triangular, siliceous bodies, found with the prece-ding. Fig. 30 to 35, Siliceous spiculee, &c. probably derived from marinesponges or Actinia, found with the preceding. Fig. 36. Scale showing yVV^s of a millimetre, magnified equallywith the drawings. jQi-JOTTR. :.:sr<?i. Jre^. ZmBcuTey del Tlate Thir d,TartTliii:i. ILLlTSTRATI0:5rS mPROE JW^BAILEYs OCT. 1842. IlATEV.
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Keywords: ., bo, bookcentury1800, bookpublishernewhavensconverse, bookyear1820
