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lius, is entitled to the gratitude of his fellow-labourers, 

 not for theoretical speculations, but for the useful and ar- 

 duous undertaking of a Species Plantarum, on the Lin- 

 naean plan, being indeed an edition of the same work of 

 Linnaeus, enriched with recent discoveries. This book, 

 left unfinished at the end of the first order of the Crypto- 

 gamia, by the death of the editor, wants only a general 

 index to render it sufficiently complete. The Musci, Li- 

 chenes, and Fungi, are systematically treated in the sepa- 

 rate works of writers devoted to those particular, and now 

 very extensive, subjects, from whom Willdenow could but 

 have been a compiler. With the Filices, which he lived to 

 publish, he was practically conversant. His insertion of 

 the essential generic characters, throughout these volumes, 

 is an useful addition, and now become necessary in every 

 similar undertaking. 



Little can be said of Holland in this review of the bo- 

 tanical state of Europe for a few years past. The Leyden 

 garden has always been kept up, especially during the 

 life of the late Professor David Van Royen, with due 

 care and attention ; we know little of its fate in the sub- 

 sequent convulsed state of the country. Botany has long 

 been on the decline at Amsterdam, though we are indebted 

 to that garden for having first received, and afterwards 

 communicated to other countries, such acquisitions of 

 Thunberg in Japan as escaped the perils of importation. 



The botany of Switzerland may, most commodiously, 

 be considered in the next place. Here, in his native 

 country, the great Haller, after a long residence at Gbt- 

 tingen, was finally established. Its rich and charming 

 Flora has been illustrated by his classical pen, with pecu- 

 liar success. Everybody is conversant with the second 

 edition of his work, published in 1768, in 3 vols, folio, 

 and entitled, Historia Stirpium Indigenarum Helvetia, 

 with its inimitable engravings, of the Orchis tribe more 

 particularly. But few persons, who have not laboured 

 with some attention at the botany of Switzerland, are 



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