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[[vertical annotation in left margin written in red]]
Buenos Aires [[/vertical annotation]]
plant and bacteriological Nacional laboratorio 
Dr. Atilio A. Bado [[red underline]] Peyredon [[/red underline]] 1234 B.A. is director. A friendly young man who seems quite competent promised him Hooker's Book on hypochlorites. Send him also other material 
An exceedingly well equipped laboratory for investigation of [[red underline]] water & water purifying methods [[/red underline]] and bacteriological control of water
Their purifying plant installed in 1917 is well built and cleanly kept, [[strikethrough]] Their main [[/strikethrough]] and work carried out very cleanly and methodically 
Water is from La Plata River, muddy ([[acqileous?]]
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suspended matters and Algae. They take the water North of the city pump it up in reservoirs treat with [[red underline]] alumimiumsulphite [[/red underline]] which they make themselves by means of H2SO4 on a special clay Then filter thru filter beds. Also treatment with CuSO4 for Algae? The water is excellent after the treatment. [[strikethrough]] They ar [[/strikethrough]] The [[red underline]] laboratories of the Government [[/red underline]] Hygiene, biochemistry, bacteriology etc. are all housed in a [[red underline]] palatial imposing building, everything scrupulously clean, [[/red underline]] white tiles on wall, tables and floor [[red underline]] all spotlessly clean. [[/red underline]] Ditto all men in clean white cotton duster. [[red underline]] Never have seen anything finer. [[/red underline]] In the afternoon [[Guillelimello?]] came to take me to visit Dr. [[red underline]] Magnin [[/red underline]] who is at the head of the hygiene. Speaks
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