798 NOTES. 
STANISTREET’S Lines. — John F. Stanistreet, Esq., of Liverpool, 
has ruled some stars on glass and steel, the rays of which, some 
fifty in number, consist of bands of parallel lines two thousand to 
the inch. The intersection of these different lines gives very curi- 
ous and beautiful optical effects under the microscope. 
Microscopy 1N Paris. — We learn from the ‘‘ Quarterly Journal 
of Microscopical Science” that Hartnack is back at Paris, just as 
he was before the war. He is about to establish works at Potsdam. 
NOTES. 
— OM 
“A very large audience, consisting of the teachers in Boston 
assembled early in November, in the new hall of the Massachu- 
setts Institute of Technology to attend the opening of a series 0 
lectures upon Methods of Instruction in Natural History. 
As it was the first time this hall had been publicly used, Profes- 
sor Runkle, President of the Massachusetts Institute of Technol- 
ogy, opened the pro App ber introduced, in a few appropriate 
words of welcome, Mr. ii s T. Bouvé, President of the Boston 
Society of N ities Histo 
Mr. Bouvé stated that “the society which he represented had for 
many years by its publications and meetings, but more especially 
public mind and endeavored to cultivate a taste for science in the 
community. he Teachers’ School of Science was a very appro- 
priate supplement to the other operations of the society and had 
been in contemplation by several officers of the society for some 
time past. The present active beginning, however, was due to 
the generosity of one of these gentlemen who had furnished the 
pecuniary means for making the necessary collections and paying 
the lecturers. The enterprise, however, was considered as an ex- 
periment to be worked out rather than talked about, and he would 
Mook without further delay introduce Prof. W. H. Niles, who 
would deliver the first course on ‘ Physical Geography.’ ~ 
. Niles made a few preliminary remarks upon the necessity 
of teaching science in the schools in a practical manner, and 
showed that t e projectors of the enterprise had no intention of 
forcing theories upon the minds of the teachers. They simply 
wished to help, to join with them in their efforts to educate the 
young, and to place before them such information as their special 
acquirements in different branches of knowledge would justify. 
