94 TRANSACTIONS OF THE ILLINOIS 



caused by insects ; but as I have already devoted all the time I can spare to this paper, 

 although many interesting facts have not even been alluded to, and as this matter does- 

 not properly come within my province, I leave it for the discussion of the more wise 

 and experienced. 



Mr. Freeman — It seems to me quite likely, in the present state of 

 investigation, that the class of observations for and against the theory 

 of a double brood may be right in the fact, and I was intending to 

 make a remark, which Mr. Eiley himself alluded to in his essay. 

 Southern Illinois is so distinct a climate that it aj^pears to me that 

 there may be a double brood there and not a double brood North. 



Dr. Hull — I have listened to the paper read with a great deal of 

 interest, containing as it does perhaps more information than it has 

 ever been my fortune to read or hear. I would, howevei', like to 

 make a qualification, because I see the gentleman does not properly 

 understand me on one question, that is, in reference to the eggs. 

 "Were all our fruit to fall on the ground when it contained larva?, then 

 the hogs would be the best protection. But that is not so. A great 

 deal comes out while it is on the tree. Another difiiculty is this: 

 Suppose you and I have an orchard, and our neighbor has an orchard; 

 you may keep your hogs in your orchard, and jet I will breed enough 

 to destroy all that is in the adjoining orchard, because they fly out, 

 and hence we cannot rely upon the hog. There is another fact : If 

 one has to run a Curculio-catcher, the hog io not the slighest use in 

 the world, because from the time they come upon the trees to the 

 time they lay their eggs, will be some ten or fifteen days, and I have 

 demonstrated that the running of the catcher takes ninety-nine out 

 of one hundred, and I so loosen them, and so completely' catch them 

 up, that I may as well catch that excess as catch a few. If we adopt 

 the Curculio-catcher, we may do away with the hogs. If we succeed, 

 we shall catch them all in fifteen days. There are about twenty-two 

 daj's from the first commencement of laying eggs until the}' cease. 



Dr. Schroeder — Always my heart was with you when you had your 

 meetings, and my good wishes, and very often I sat down and made 

 a speech on these things, particularly this Curculio question. Now 

 let me tell you that the devil is to be fought in one way or the other, 



