ske Flora'-' (Guide of the Danish Flora) bears witness. Rostrup pos^^ 

 sessed such a knowledge of horticulture that he was able to publish 

 new and revised editions of F. I. C. Jensen's popular book on horti= 

 culture after the death of the original author. From 1894-1903 he was 

 the president of the Royal Danish Horticultural Society and 1900- 

 1903 president of the Cooperating Horticultural Societies and honou* 

 rable member of the Gardener's Association as also of the Royal 

 Danish Horticultural Society. 



Moreover Rostrup had the same thorough knowledge of cultivated 

 plants of agriculture as of horticulture; born and bred on a farm and 

 spending the greater part of his life in the country, a man of his 

 genius for botany could not help becoming very familiar with all the 

 cultivated agricultural plants, both the chief species and the varieties. 

 In 1865 he pubHshed an account of the principal Heldsgrasses and in 

 1877 in connection with Johan Lange an account of Danish species 

 of forage. But he did not content himself with the study of the plants, 

 he displayed great energy in procuring better, more prolific and more 

 yielding cultivated plants for the farmers. He was one of the most 

 active members of the Association for the Improvement of Cultivated 

 Plants, he held the offices of secretary and editor of the Association, 

 and he was a great help to M0ller;!Holst in the starting of "Dansk 

 Fr0kontrol'' (The Danish Seed^inspecting Office) which was origi* 

 nally a private enterprise, but later on was taken over by the State. 

 Also by working for the extermination of weeds he tried to give the 

 farmer greater profit from his fields and his labour, and by this work 

 Rostrup entered into close connection with all the leading farmers. 



Rostrup had just as thorough and extensive a knowledge of the 

 f oreststrees ; he had an eye open to the different resisting power of 

 the different species against diseases; he often drew the attention of 

 the foresters to the fact that seeds of different origin produce plants 

 not equally susceptible to diseases. 



Rostrup was altogether quite up to date with his own time as far 

 as concerns the branches of science with which he dealt. He knew his 

 own limitation, and we never see him venturing into territories with 

 which he was not completely familiar; he has to a higher degree than 

 is generally the case been useful to this country by making his scien* 

 tific experiences accessible to the practical man. His great and rich 

 activity was appreciated by his contemporaries, he greatly influenced 

 all the institutions and branches of industry with which he was con« 

 nected; his directions for cultivation were always regarded because 

 his knowledge and experience were to be trusted. The lectureship 

 which was established for him at the Vet:= 6. Agricult. College was 

 in 1902, made professorship, July 28. 1894 he was made Dr. Ph. hon! 



