TRANSACTIONS OF SCIENTIFIC SECTION. — 141 
evident with my machine. It is put ina violent tremor, 
and the table, as well as all that is on it, in violent agita- 
tion. 
I have not yet been able to hold it firm enough to pre- 
vent this effect, but I have no doubt that the machine 
might be bolted so securely as to prevent all visible 
tremor. 
If this can be done, and the rotation of the disc kept 
up by an electric magnet, I can see but one escape for 
the energy, that is in some form of molecular action, 
‘probably heat. I will hazard the conjecture that a disc 
compelled to perform both rotations simultaneously will, 
after a time, show an increase of temperature. 
At the conclusion of the paper, the chairman made the 
regular annual report of the work of the Section during 
the year and the Section elected the following: 
Chairman, : : j Mr. Epwarp ELSwortH. 
Secretary, . ’ : Mr. JAMES WINNE. 
Curator, . ; , : W. G. Srevenson, M. D. 
Librarian, : j : Mr. FreEp. 8. ARNOLD. 
NOVEMBER 19, 1889—SEVENTY-FIFTH REGULAR MEETING.., 
Edward Elsworth, chairman, presiding ; eleven mem- 
bers and several guests present. 
- The chairman of the section, Mr. Edward Elsworth, 
presented the subject of Food Adulterations, and spoke 
of the importance of the subject to society. He criti- 
cised the extravagance of the Legislature and of local 
boards in matters of comparatively lesser interest and 
compared it with the small appropriation made by the 
State of New York in support of the State Board of 
Health. | 
One of the purposes of this society should be to aid 
local boards in establishing sanitary appliances, securing | 
a good and healthful water supply, including proper sys- 
- OFfL 
