IIO BIBLIOGRAPHY. 



English Edition of the same, re-edited and augmented by the author, 

 and translated by Wynne E. Baxter. London and New York, 1893. 

 Synopsis des Diatomees de Belgique. 8vo, 1880-18S5. 



(I.) An atlas of 138 plates, containing 3,200 figures. 

 (II.) A volume of text. 

 (III.) A volume of alphabetical tables. 

 Witt (O. N.). Ueber den Polierschiefer von Archangelsk-Kurojedowo 

 im Gouvernt. Simbirsk, 7 plates, 8vo. St. Petersburgh, 1887. 



Witt (O. N.) and Truan (A.). Die Diatomaceen der Poly- 

 cystinenkreide von Jeremie in Hayti, West Indien. 7 plates, 4to. 

 Berlin, 1888. 



2. Collections of Diatoms. 



Collections of diatom types have been published at different periods. 

 The most important are : 



Cleve and Moller. Diatoms Upsala, 1877-1882. Six parts, con- 

 taining altogether 324 very interesting preparations, and accompanied by 

 a detailed analysis by Mr. A. Grunow. 



Delogne (C. H.). Diatomees de Belgique arranged in accordance 

 with the synopsis of Dr. Henri Van Heurck. Published in parts 

 containing 25 preparations. Brussels, 1880-1882, four parts containing 

 about 100 preparations were published. The preparations, which are 

 very well made, have a special interest to those who have our synopsis. 



Eulenstein (Dr. Th.). Diatomacearum species typicce. Cent i. 

 Stuttgart, 1868. 



A collection ot preparations which leaves nothing to be desired. Only 

 the first 100 appeared. The second was about to appear when the 

 author died. 



Moller (J. D.) Diatomaceen typen-platte. Under this title Mr. 

 Moller, of Wedel (Holstein), sells a preparation containing 400 diatoms 

 systematically arranged according to the classification of Mr. Grunow. 

 A list accompanies the preparation, which is very useful to any one 

 beginning the study of diatoms. The price is ^3 15s. A second 

 type slide containing only 100 diatoms costs 1 4s. Mr. Moller also 

 sells at the present time two other preparations : one containing 8co 

 different diatoms costing ^20, and the other, containing 1600 diatoms, 

 the price of which is ^80. 



Smith (Prof. Hamilton L.) Diatomacece typiccc. This collection 

 is one of the most important of those hitherto published, not only on 



