BACTERIAL CONTENTS OF VARIOUS WATERS 109 



Mineral Springs (Fazio) 



Description of 



Water 



Number of Micro-organisms 

 found in 1 c.c. 



Chalybeate 



springs of 



Castellamare 



Carbonated 

 sulphur 

 springs 



Alkaline 

 springs 



Acqua rossa, about 60 metres from the source. 



Temp. 14° C March 1888 12 



May 1888 . 28 

 Acqua del Mulino, also at some distance from the 

 source. Temp. 15° C. . . - March 1888 42 



„ May 1888 . 18 

 (Collected at the source. Temp. 20-22° C. (Telese.) 

 J June 1887 . 1 



I „ „ „ (Castellamare.) May 1888 . 4 



Collected at the source. Temp. 12-14° C. (Acetosella.) 



May 1888 . 15 

 „ ,, „ under more favourable ex- 



ternal conditions .... Sept. 1888 . 2 

 Springs at MuragHone. Temp. 16-18° C. (The 

 exact spot is not mentioned.) . May 1888 . 19 

 „ „ „ „ June 1888 . 21 



Sept. 1888 . 45 



None of the micro-organisms found were pathogenic 

 to animals. For the bacterial condition of artificial 

 mineral waters, see pp. 235-242. 



Lakes. — In examining the water direct from any 

 particular lake, due attention must be paid to the fact 

 that the numbers of micro-organisms vary according* 

 as the sample is taken near the shore or in the middle 

 of the lake. In fact, the condition of the water may 

 vary greatly in diiFerent parts. Fol and Dunant^ have 

 shown that the water of the Lake of Geneva contains 

 as many as 150,000 in a c.c. taken near the shore, 

 whereas in a c.c. examined from the middle of the lake 

 only 38 were found. 



Some recent observations by Kariinski - confirm 

 these experiments. He studied the distribution of 

 micro-organisms in the Borke Lake near Konjca in 



^ BeclieroJies sur le Nomhre des Gerines vivamts que renferinent 

 quelques eaux de Geneve. Geneve, 1884. 



~ ' Zur Kenntniss der Vertheilung der Wasserbakterien in grossen 

 Wasserbecken,' Centralhlatt fur Bakteriologie, 1892, vol. xii. p. 220. 



