The Botanical Gazette. 
DEPTH OF WATER IN FEET. 
NUMBER OF BACTERIA PER CC. FOUND INTHE 
WATER AT DIFFERENT DEPTHS (IN FEET). 
is 
bel 25. | 39:|'35 
40 
45 
so 
Cs coy 
es ays: 
5 se 
Mita apn a | 
TiO}... 
ove) IZO}. i wepatees 
edeel oe 
obtained at Naples. 
greater, no marked diminution cou 
superficial and the bottom layers. 
meter of water subjected to analysis contairf 
ally not exceeding one hundred g 
Karlinski* in studying the waters 0 
fresh water lakes in Bosnia, arrives at a som 
conclusion. 
y micro-organisms is 
b 
teriological examination has 
In fact t 
tances from land. 
4Cent. fiir Bakt. x1. 220. 
He finds that the germ life is muc 
surface and that there is a gradual diminution } 
samples from increasing depth are examined. 
tion, however, only extended to the depth 
surprising that there should be so marked a 
nge in de 
alrea 
ood 
not yet 
erms per u 
f Lake Borke, one 
ewhat diltere™ 
h richer at ™ 
n number 
His investis* 
of fifty feet: It 
é 
ed a decrease in BN 
pth. =o 
dy exa ar 
oll en 
