REFERENCES. 133 



Brunnenwasser, sowie iiber reducirende und oxydirende Eigen- 

 schaften der Bakterien. Zeitschrift fiir Hygiene, I, 193. 

 HESSE, W., and NIEDNER. 1898. Die Methodik der bakteriolo- 

 gischen Wasseruntersuchung. Zeitschrift fiir Hygiene, XXIX, 



454- 



HILL, C. A. See MAcCoNKEY, A. 



HILL, H. W., and ELLMS, J. W. 1898. An Apparatus for the 

 Collection of Samples of Water for Chemical, Microscopical, 

 and Bacteriological Analysis. Transactions of the American 

 Public Health Association. 1897 Meeting. XXIII, 193. 



HILL, H. W. 1899. Report of Director of Bacteriological Labo- 

 ratory. Twenty-seventh Annual Report of the Health Depart- 

 ment of the City of Boston for the year 1898, 63. 



HORROCKS, W. H. 1901. An Introduction to the Bacteriological 

 Examination of Water. London, 1901. 



HOUSTON, A. C. 1898. Chemical and Bacteriological Examina- 

 tion of Soils with reference to the Amount and Nature of the 

 Organic Matter and the Number and Character of the Bacteria 

 contained in them. Supplement to the Twenty-seventh Annual 

 Report of the Local Government Board, containing the Report 

 of the Medical Officer for 1897-98, 251. 



HOUSTON, A. C. 1899. a. Chemical and Bacteriological Exam- 

 ination of the " Washings " of Soils, with Reference to the 

 Amount and Nature of the Organic Matter and the Number 

 and Character of the Bacteria contained in them. Supplement 

 to the Twenty-eighth Annual Report of the Local Govern- 

 ment Board containing the Report of the Medical Officer for 

 1898-9, 439- 



HOUSTON, A. C. 1899. b. Bacterioscopic Examination of Drink- 

 ing-water with Particular Reference to the Relations of Strep- 

 tococci and Staphylococci with Water of this Class. Supple- 

 ment to the Twenty -eighth Annual Report of the Local Govern- 

 ment Board containing the Report of the Medical Officer for 

 1898-9, 467- 



HOUSTON, A. C. 1900. a. Chemical and Bacteriological Examina- 

 tion of the "Washings" of Soils, with Reference to the 

 Amount and Nature of the Organic Matter, and the Number 



