WHOLE VOL. APPLIED ENTOMOLOGY — HOWARD 293 



Among- them should be mentioned Doctor Hedlund, Professor at the 

 Agricultural School in Alnarp, who has done research work on 

 Hylemyia coarctata; the famous geneticist, Prof. Dr. H. Nilsson-Ehle, 

 at Svalov, who has made many observations on economic insects and 

 nematodes in grains ; Dr. Simon Bengtsson, until 1929 Director of the 

 Entomological Department of the University at Lund, who has made 

 a special study of the nun moth in Sweden ; the physician, Dr. John 

 Peyron. in Stockholm, who has investigated Chcimatobia brtmiata : 

 Dr. Eric ISIjoberg. who has published a monograph on lice ; the Pro- 

 fessor at the Veterinary High School of Stockholm, Dr. Arvid 

 Bergman, who has made extensive studies on the Oestridae of the 

 reindeer, and so on. 



I have long had a great admiration for Swedish entomology. My 

 early studies of the parasitic Hymenoptera led me to carefully work 

 with C. G. Thomson's Hymenoptera Scandinaviae, Volumes 4 and 5, 

 in the course of which I picked up a translating knowledge of the 

 Swedish language. In 1897 we were greatly pleased to receive a 

 visit in Washington from Dr. Yngve Sjostedt, who spent some time 

 studying the organization and work of the entomological service of 

 the United States Department of Agriculture and the collections of 

 the United States National Museum. I have no doubt that it was 

 through Doctor Sjostedt that in 1898 I was made an honorary mem- 

 ber of the Entomological Society of Stockholm. This was the first 

 honorary membership in a foreign society that had come to me. a 

 notable thing in itself, rendered still more notable by the high char- 

 acter of the Society. Fifteen years later I had the pleasure of meeting 

 Doctor Sjostedt at the Second International Congress of Entomology 

 at Oxford in 1912, and still 13 years later I met him again at the 

 Zurich congress. In the intervening years Doctor Sjostedt had gained 

 a very high place in the scientific world and was highly esteemed both 

 at home and abroad. 



Even before Doctor Sjostedt's visit, Dr. Filip Trybom visited us 

 in Washington ; in fact, as I see from my notes, it was away back in 

 1886. Doctor Trybom at that time was interested in some fisheries 

 question, but he had been studying the Thysanoptera and was anxious 

 to talk over things with Theodor Pergande here, who was also study- 

 ing thrips. Trybom was here for several days, and when he came in 

 the last time he said to Pergande, " I am going to California ; is there 

 anything I can do for you out there ? " Pergande replied, with a 

 twinkle in his eye, " No, unless you get me some of those thrips from 

 the tops of those big California trees." Trybom was stumped for a 



