BACTERIAL CONTENTS OF VARIOUS WATERS 109 



Mineral Springs (Fazio) 



Description of 

 Water 



Number of Micro-organisms 

 found in 1 c.c. 



Chalybeate 



springs of 



Castellaraare 



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 



1 Springs at Muraglione. Temp. 16-18 C. (The 

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

 June 1888 . 21 

 Sept. 1888 . 45 



Xone 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 different parts. Fol and Dunant 1 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 Karlinski 2 confirm 

 these experiments. He studied the distribution of 

 micro-organisms in the Borke Lake near Konjca in 



1 Reclierches sur le Nombre des Germes vivants que renferment 

 quelques eaux de Geneve. Geneve, 1884. 



2 ' Zur Kenntniss der Vertheilung der Wasserbakterien in grossen 

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



