EXPERIMENT STATION REPORTS. 211 



year and to express the hope that the importance of chemistry in relation 

 to the many problems of agriculture will be more fully appreciated and 

 that this section may function in the future to the full extent of its 

 possibilities. For your advice and council during the year I wish to 

 express mj' grateful appreciation. 



Kiespectfully, 



ANDREW J. PATTEN, 



Chemist. 

 Ea'st Lansing, Michigan, Juno '^0. 1022. 



REPORT OF THE SECTION OF ENTOMOLOGY. 



Director R. S. Shaw, 



East Lansing, Mich. 

 Dear Sir: 



The present fiscal year has witnessed no change in the personnel of 

 the Section of Entomology. It is believed that if it can be so arranged 

 an assistant who would devote himself to the study of orchard and vine- 

 3'ard problems in the field could be employed with much profit. New 

 problems in the control of fruit pests are constantly coming up, problems 

 that must be passed up for the lack of some one to attack them. At 

 present the whole field of entomology is covered by less than half of the 

 time of each of two workers. 



The work in parasitology has been greatly facilitated by the completion 

 of the animal-house, sujiplying as it does housing accommodations for a 

 few animals under observation and a small laboratoiT for making exami- 

 nations of material. 



Quite a bit of work has been done on Michigan's reindeer herd at the 

 instance of the State Conservation Commission. Besides this, progress 

 has been made in the survej' of diseases of food-animals and the work 

 in the control of human intestinal parasites has progressed favorably as 

 well as considerable work on internal parasites of foxes. 



During the j-^ear the European corn-borer has been constantly in mind 

 and many trips have been made and many samples of suspected cases, 

 sent in by mail, have been examined in order that no real case might be 

 neglected. Thus far none of the real pests have been encountered. 



The fall of 1921 witnessed the worst case of corn-ear worm, HcliotJiis 

 ohsoleta, ever seen by the writer. Great quantities of sw^eet corn ami 

 popcorn were destroyed and much field-corn as well. Of course nothing- 

 could be done for the season of 1921 after the attack was well under Avav, 

 and therefore we confined our efforts to giving invstructions aiming toward 

 the avoidance of a similar loss during 1922. It is of course too early as 

 yet to know how successful the cami>aign will be. 



When the season was well advanced manj- ears of corn harboring a 

 number of the larvae were sent in. These proved to be the fall army- 

 worm, Laphygma fruglperda, and during the fall the corn ear-worm and 

 the fall army-worm vied with each other in destroying the crop. Unfor- 



