376 HEARINGS BEFORE COMMITTEE ON AGRICULTURE. 
the machines in use are the best that could be devised, whether the 
principles of their construction are the best and most economical that 
could be devised. 
Mr. Apams. Professor, the subject of farm engineering, I should 
think, would also naturally cover the subject of the use of power upon 
the farm. 
Doctor Truz. Certainly. 
Mr. Apams. And the adaptation or adjustment of that power, the 
manner in which it should be located in the farm buildings, and where 
it can be economically employed. 
Doctor Truz. Certainly. 
Mr. Haucen. This, then, leads up to what the chairman has referred 
to—a recommendation. You find one implement of greater value than 
another, and it would be your duty, of course, to recommend that 
machine or implement? 
Doctor Trur. Oh, no. 
The Cuatrrman. Are you not obliged to announce that fact? 
Doctor Trur. Not with reference to a special machine. 
Mr. Haveen. What good would it be unless it was announced? 
Doctor Truz. What we would announce is that machinery con- 
structed in accordance with certain principles is the best. 
Mr. Burueson. For instance, Keating makes a certain disk plow. 
Moline makes a certain disk plow that is essentially different. If you 
found the principles involved in that Keating plow would be the best, 
and you pronounced in favor of it, would not that be an advertise- 
ment for the Keating plow over the Moline plow? Would not that, 
as Mr. Haugen says, be the sum and substance of all that could be 
done? 
Mr. Scorr. If you describe the principle that you determine is the 
correct one in a certain machine, do you not suppose the manufacturer 
of that machine would be smart enough to fit that description of a 
principle to his machine and use it as an advertisement? 
Doctor Trux. I should think he would be wise enough—I hope 
he would—to adapt the machine to the correct principle if it was 
discovered. 
Mr. Haveren. Would not the farmer be the first one to discover the 
merits of the different machines? 
Doctor Truz. I do not think so necessarily; no, sir. 
Mr. Havcen. I mean the farmer or whoever operated the machine 
in preference to the manufacturer of the implement. 
Doctor Trur. I think the farmer in a general way is just as liable 
to make mistakes with reference to the use of machines as he is with 
reference to the crops that he raises. 
aa Scorr Have you spent any money on this work during the past 
year? 
Doctor Trur. On this particular work? 
Mr. Scorr. Yes. 
Doctor Trug. No, sir. 
Mr. Scorr. You have not undertaken it at all? 
Doctor True. No, sir. 
The Caarrman. He was not authorized to do so. The doctor 
advocated this thing last year, and the committee refused it. 
Mr. Henry. Is it not true that the farmer becomes attached to the 
machine he uses and thinks it the best machine, and if he has a. Buck- 
