702. NOTES. 
the glazed cover. When sufficient have been thus transferred to 
form a device, as a star, cross, initials, etc., they are placed under 
the 14 inch and with the hair they are, with patience as well as 
tact, pushed, coaxed and driven into the required position, taking 
care to leave the valves on their backs to avoid insurmountable 
trouble with air bubbles. The objects are then fixed by bringing 
them close to the mouth and moistening by a long slow breath. 
After drying again on the hot plate they may be freely mounted in 
balsam which may even be boiled if desired and the mounting 
finished at once. Only on the calmest of days can sufficient im- 
munity from dust be obtained for successful work ; and the care 
of the eyes should never be forgotten during this straining work. 
Tue Popura Scate.—Mr. Charles Brooke, in his President's 
Address before the Royal Microscopical Society, gives the follow- 
ing cool and excellent criticism on this much debated subject. 
“ The writer, reviewing this subject under the dictates of common 
sense, when observing the familiar Podura notes of admiration 
well defined and free from colour, cannot resist the inference that 
in the objective all aberrations are nicely balanced, and the object 
truly represented in the visual image; on the contrary, when the 
same object is viewed as rows of ill-defined beads loaded with col- 
ours, it is difficult to avoid suspecting that the appearance is a 
spectral illusion, resulting from some unexplained diffraction a 
interference ; and this suspicion can hardly be dispelled from his 
mind by anything short of rigid mathematical demonstration.” 
NOTES. 
Mr. Jons E. Gavit, President of the American Note Company of 
New York, died at his residence, Stockbridge, Mass., on the 26t 
of August, in the fifty-eighth year of his age. It is rare that one 
finds in the busy walks of life a man who, while filling an oioi 
demanding constant attention, unlimited resource of iive 
executive ability and diplomacy as well, should yet find time to 
familiarize himself with the various branches of science, not ae 
understanding them thoroughly, but capable of appreciating pe 
_ discussing their bearings with those specially engaged in t 
ject. Of a man of such varied attainments, one would naturally ask, 
why he had not published the results of his work,—had not made 
known his inventions. Various reasons may be given: first the 
