THE BANG OR LABORATORIES. 



ing a chemical or physical laboratory ? I found as 

 many as three-quarters of the students were 

 destined for service in the religious denominations 

 in after-life. I have frequently met some of those 

 old students who had entered upon their profession 

 as ministers, and have found that they always 

 recollected with interest their experimental work 

 at the University. They felt that the time they 

 had spent in making definite and accurate 

 measurements had not been time thrown away, 

 because it educated them into accuracy, it 

 educated them into perseverance if they required 

 such education. Some students even worked so 

 hard in my laboratory that I had to interpose for 

 the sake of their health. There is one thing I feel 

 strongly in respect to investigation in physical or 

 chemical laboratories it leaves no room for -shady, 

 doubtful distinctions between truth, half-truth, 

 whole falsehood. In the laboratory everything 

 tested or tried is found either true or not true. 

 Every result is true. Nothing not proved true is a 

 result ; there is no such thing as doubtfulness. 

 The search for absolute and unmistakable truth is 



