88 STATE BOARD OF AGRICULTURE. 



feeder on strawberry leaves and still another is the well-known peach 

 borer. 



Numi'rous articles on insects and their control have been written for 

 the uewspai)ers and agricultural ])eriodicals, at times when information 

 was especiallv desirable rejz;ar(lin<:f specific insects. 



Meetinjrs of the Association of Economic Entomolo<Tists of America, 

 and of the American Association for the Advancement of Science, at 

 Columbus, Ohio, were attended at the writer's expense. 



The rcai'ing of insects under investij^ation, and the consequent finding 

 of weak points in their life history when they may be fouj^ht to advan- 

 tage, is carried on under great difficulties; most of the insects dying 

 because of the lack of a suitable room to keep them in. A small glass 

 building, such as is used for gr(M^nhouse purposes, where the tempera- 

 ture, moisture, etc., can be regulated, and where an approach to oulside 

 conditions may be obtained, has been found useful in several other 

 States and could be used to great advantage here. 



It remains for the writer to express his sincere appreciation and 

 thanks for the kind aid of Professor Barrows in the form of advice and 

 information, both of which are always to be had for the asking, and 

 for many courtesies extended at all times. 



Respectfully submitted, 



R. H. PETTIT, 

 Consulting Entomologist. 

 Agricultural College, Mich., 



June 30, 1900. 



REPORT OF CONSULTING VETERINARIAN. 



Director C. T), Smith: 



Sir — As consulting veterinarian for the Experiment Station I have 

 the honor to present the following report: 



The greater part of my work in this connection has been in replying 

 to letters received relative to the diseases of live stock. It is very grati- 

 fying to report that, so far as my knowledge goes, no serious outbreak 

 of any contagious disorder has visited the live stock of the State during 

 the past year. The outbreaks of certain contagious swine disorders, 

 which visited the State two years ago, have evidently to a very great 

 extent died out, inasmuch as no letters have been received relative to 

 these conditions during the year just past. 



The sheep industry of the State is threatened with a menace in the 

 form of certain internal parasitic diseases; among these the strongylus 

 contortus, or stomach worm, and the oesophagostoma columbianum, 

 which produces the so-called nodular disease, are doing the most harm. 

 The stomach worm does the most harm among lambs; the lambs may not 

 show any evidences of the parasite in the fall when they are being 

 picked up for feeding purposes, but will develop the disease during the 



