Price Is. Qd. each Slide. 



MICROSCOPIC PREPARATIONS OF THE DIATOMACE.E. 



Smith and Beck supply the following Diatomacese described in the Synopsis. 

 As each specimen has been examined by the Author of that Work, and the 

 Localities marked upon each, the authority of these mountings may be relied 

 upon by those desirous of identifying these interesting and beautiful objects. 



A few Foreign specimens of rarer British Forms have been introduced, and 

 are denoted by italics. 



The style of the mountings is denoted by the letters affixed. B = balsam, 

 D = dry, and F = fluid. 



Diatomaceous Earths, in Balsam. 



Peterhead Deposit. 

 Premnay Peat. 

 Dolgelly Earth. 

 Can tyre Peat. 

 Lough Mourne Deposit. 



Lough Island Reavey Deposit. 

 Mull Deposit. 

 Newbie Deposit. 

 Raasay Earth. 



DIATOMACE^.— VOL. I. 



B. Epithemia turgida. 



B. Epithemia granulata. 



B. Epithemia Zebra. 



B. Epithemia Argus. 



B. Epithemia longicornis. 



B. Epithemia alpestris. 



B. Epithemia proboscidea. 



B. Epithemia Sorex. 



B. Epithemia Musculus. 



B. Epithemia Westermanii. 



B. Epithemia rupestris. 



B. Epithemia constricta. 



B. Epithemia gibba. 



B. Epithemia ventricosa. 



B. Eunotia Arcus. 



B. Eunotia gracilis. 



B. Eunotia triodon. 

 B. Cymbella Ehrenbergii. 

 B. Cymbella cuspidata. 

 B. Cymbella affinis. 

 B. Cymbella maculata. 

 B. Cymbella Helvetica. 

 B. Cymbella Scotica. 

 B. Amphora ovalis. 

 B. Amphora affinis. 

 D. Amphora membranacea. 

 D. Amphora tenera. 

 B. F. Cocconeis Pediculus. 

 B. Cocconeis Placentula. 

 B. Cocconeis Thwaitesii. 

 B. Cocconeis Scutellum. 

 B. Cocconeis Grevillii. 





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ii LIBRARY 



