470 The Exhalation of Ozone by Flowering Plants. (May, 
scratch or bite. They are very fond of caresses, and will lie 
quite still to receive them, crooning a little in a ridiculously satis- 
fied way. I knew a tame Ateles of another species which always 
met one with an embrace around the neck ; this was not an ac 
quired trick, but simply the natural expression of its affection for 
human beings. 
One individual of a large Cebus was brought in; it was a great 
rarity, and none of our hunters recognized it at all. There isa 
smaller monkey occasionally seen here, which I judge to be also 
a Cebus, but we did not obtain specimens. The marmosets do 
not seem to be represented, at least in the eastern part of this 
province. 
Bats were rather common, but by no means as numerous as M 
equatorial Brazil, and none of the species which we obtained wert 
- very large. So far as I could discover, the blood-sucking kinds 
are unknown here. 
"T° 
vv 
THE EXHALATION OF OZONE BY FLOWERING 
PLANTS. 
BY J. M. ANDERS, M.D., PH.D. 
(Continued from page 344.) 
E became evident that in order that this important questi 
might be set at rest, the conditions would have to be varied 
further observations instituted. I now set to work to devise the 
necessary apparatus to carry on such experiments. According!) 
I had made a glass case large enough to contain a 
thrifty growing plants in pots. Its dimensions were 4 
length, three anda half feet ; width, two anda half feet, an% y so 
two and a half feet. A portion of the top was left removab ni 
as to furnish an aperture through which the plants © 
placed in the case and again taken out. Such an arran 
follows: 
ro, 
this would admit the sunlight to the plants and confine their bi 
halations, and thus give the ozone, if any should T In all of the 
better opportunity of acting upon the test papers. 
remaining experiments here recorded I was greatly was 
Mr. G. B. M. Miller, my medical student. The app m pang 
first placed in the bay window of an occupied sitting tO rae | 
east. The plants here received the sun’s rays gi a in tH 
hours of the day. A dozen thrifty plants were par 
dozen or mor 
d height | 
