64 



ula, enabled by his own work, prodiKX'd a new edition tfi which he added 

 exact bibligraphical citations. 



Meanwhile, as the necessity of familiarizing practical circles with the 

 nature of plant diseases became increasingly more evident, it led the large 

 German Agricultural Society to undertake the issuing of suitable publica- 

 tions. In 1892 appeared the first edition of Sc^raucr's "l^flanzcnschutz," and 

 in 1896 its second edition, revised by A. !>. JM-ank and 1'. Sorauer. TIk' 

 authors strived for the briefest i)resentation possible, classified the diseases 

 according to the host plants and treated each disease under three headings :— 

 Recognition, TToduction and Control. "Phe text was supplemented l)y num- 

 erous illustrations on colored plates. In the same way, Frank published a 

 more detailed work with the title : — "Kanipfbuch gegen die Schadlinge un- 

 serer Feldfriichte," Berlin 1897 and Sorauer one, entitled. "Schutz der Obst- 

 biiume gegen Krankheiten," Stuttgart 1900. provided with numerous figures 

 in the text. 



Of books in foreign lar.guages, there a])peared about this time. W. 

 Kriiger's treatise on tlie diseases of sugar cane in the "Bericht der \'ersuchs- 

 station fiir Zuckerrolir in \\'est-ja\a, Kagok-Tegal," published in \i>^j(}. This 

 treatise took up thoroughly the Sereh disease with a conscientious use of the 

 pertinent literature. Subsequent to it appeared in Leyden in 1898, H. Wak- 

 ker and G. W^ent's "De ziekten vom het suikerriet op !n\a." which should be 

 recommended because of its many plates. 



Delacroix treats the diseases of coffee especial)} in his ])ook. "Les mala- 

 dies et les ennemis des Cafeiers," Faris (2nd Fd. 19(^0). Two years 

 later D. McAlpine. in Melbourne, published "h\uigus diseases of stone-fruit 

 trees in .Atistralia." 



The last named pulilication considered cultivated plants only. The need 

 of a comprehensive treatment of the whole field of diseases was shown and 

 after a long interval, a response, the manual, "Plantepatologi" Haandbog i 

 Laeren om plante.sygdomme af F. Rostrup, was published at Kjobenhavn in 

 1902. This book, elegantly gotten up and attractive because of its many 

 careful original drawings, lays emphasis on fungous diseases, the known 

 number of which the author by his many personal observations, published 

 after 1871, had increased. To facilitate the consultation and discovery of the 

 different diseases, a list was placed at the end of the book, arranged accord- 

 ing to the host i)lants. 



In 1903 the Japanese published a book which shoidd be considered as a 

 significant cultural advance. We have a German translation of this entitled 

 "Lehrbuch der I'flanzenkrankheiten in Japan," b'in Handbuch fiir Land- 

 und Forstwirte, Gartner und P)Otaniker. \dn Arata Ideta (3rd Fd.) Tokio 

 1903). This work is provided with a glossary of technical terms in 

 German, English and Japanese and contains 13 plates and 144 text figures 

 carried out in fine line-drawings (mostly after Gerriian authors). 



In a science like phytopathology, in which the results of all investiga- 

 tions are intended for use in practical industry, the need is at once felt of 



