■ Bureau of Science Service 
19 
■pany, of Bloomington. Study of phonograph horns, tone arms,' and 
reproducers, and designing Isosonic horn, Starr. Piano Company, 
Richmond, Ind. 
Professor Rolla R. Ramsey 
■191 If, Test for radio-activity of water of Young's Well, Brown County, 
■ Ind. 
1917. Central Stone Mill, Bloomington. Test of wattmeters. 
1924. Test of samples of ore from Seattle, Wash. 
1925. J. R. O’Brien, Lockport, M.Y. Test of sample of water for radio- 
activity. 
1926. Radium Products Company, Chicago. Test on “radium vitalizer.” 
1926. DeForest Grant, New York City. Test of radium and thorium 
water for internal use. 
Professor John B. Butcher 
The nature of explosions in gases. Device for observing strain in glass. 
Improved artificial gas-burner for- use in laboratories. Origin ' of 
the excess of nitrogen in pockets in coal mines. ■ Thin ^asbestos sheet 
as a covering for hot air pipes. 
Assistant Professor Mason E. Hufford 
1917-13 . United States Military Department, Bureau of Standards. De- 
tection and measurement of ground waves produced by the firing 
of large guns. 
Conditions under which Service is Offered 
The Science Service Bureau has been organized primarily 
for the citizens of Indiana and for such will function without 
fees in giving information and advice when it can be done 
without additional work and investigation on the part of the 
one giving it. But on account of the varied character and 
range of researches, no definite statement can be made that 
will cover all cases of this kind. The conditions and terms 
under which investigations will be undertaken must be deter- 
mined in each individual instance. 
The attention of manufacturers, business corporations, and 
men of means generally is called to the fact that the Univer- 
sity has considerable equipment in the way of libraries and 
laboratories with trained scientists in charge. Under the 
direction of these men many research problems might be 
solved at much smaller expense than they could be solved in 
any other manner, —by providing the "funds for research 
