Tur Microscope. 279 
VALUABLE ARTICLES FOR NEXT YEAR. 
In our January number we begin the publication of a series 
of articles, the object of which will be to encourage students 
and microscopists to study Empryonogy. To adapt it to inland 
students, only terrestrial and fresh-water forms will be included. 
The series will begin with a plain and concise account of the 
broad features of general embryology ; then will follow an ac- 
count of the development of special groups; and last, but not 
least, the articles will tell the student just how to conduct in- 
vestigations of the same character, including all the technique 
of hardening, staining, section cutting, and mounting. The 
first article for the January number is already in type. It is 
fully illustrated, and is entitled “‘ The Embryology of Insects.” 
The author still insists upon our withholding his name for the 
present. He is the author of “ Hints on Technique” in our 
November number; of “ Results of Microscopical Research,” 
in the present number; and is author also of some of our most 
valuable text-books and original contributions to science. The 
latter alone cover over 500 octavo pages. Anticipating a large 
demand for these continued articles, from teachers and _ stu- 
dents, we shall issue an extra large edition next month. Par- 
ties wishing extra copies in lots of twenty or more, for class 
work, will be supplied free, by giving us timely notice. 
THE Microscope 1s ALways Reapy.—A consideration that 
greatly recommends the use of the microscope is the fact that 
it is never too cold or hot, too dry or wet, too cloudy or bright 
for work. It works wel! by daylight or lamp-light. There is 
always something for examination and study. By its use a 
world of life and beauty, otherwise utterly unknowable, is made 
known. Our ideas and notions of things are greatly changed 
and enlarged. Plants become living things, many of them mar- 
velous motions and powers. We find them performing most 
exquisite and graceful maneuvers, moving in all directions, and 
traveling from plave to place. We find other plants living in 
wonderfully beautiful glass houses, chased with lines and sculp- 
tured as no human hand can sculpture. We see through and 
through plants and animals, and observe ail their varied inter 
nal structures and motions.—Zz, 
