Orof.d.iis : A Method of (^orrelKtroti. — /Cci/rs. 2S9 
The faculty meetings have been reduced from one or more 
weekly to five in forty-five weeks, and unless some emergency 
arises, one or two meetings a year will be all that will be nec- 
essary in the future to transact the business that is refjuired 
of the faculty as a body. 
The system has also brought about a simplification of the 
other work and enables it to be rapidly done because the di- 
rector is charged with the duties that usually devolve upon a 
faculty, and because each professor has absolute control over 
his department and the students in his classes. The head 
professors are responsible to the director while the other in- 
structors are directly responsible to the head of the depart- 
ment with which they are connected. 
The regulations of the school have been greatly reduced in 
number and so arranged that the student himself is speciallj^ 
interested in seeing that they are observed, since if they are 
not, his own act walks him out of the institution and closes 
the door behind him, in most cases without the intervention 
of the faculty or director. Those of you who have debated 
long hours over some student, whether it was "to be or not to 
be" can realize what a relief such automatic action is for a 
long suffering faculty. These changes have all naturally 
grown out of the elective system, and the result is that the 
Michigan Mining School has had one of the pleasantest, most 
profitable and harmonious years it has ever seen, although it 
has never developed enough disturbance in its history for the 
newspapers to take up its discussion. Not a single professor 
or student desires or would go back to the old system, and 
while further experience will undoubtedly indicate various 
modifications of details, it can certainly be considered at this 
time that the elective system is an uiKiualilicd success. 
OROTAXIS: A METHOD OF GEOLOGIC 
CORRELATION. 
Hv CiiAULKK HoLLIN Keves, .Jofforsoii City, Mo. 
In his discussion of the ancient formations of the Lake Su- 
perior region the lamented Roland I). Irving* lays particular 
stress on the value of unconformities as a basis for geological 
■ *U,S. Gfol. Sill-.. Tth Ann. Kept.. \>],. :{90 -391), 1888. 
