724 REPORT OF NATIONAL MUSEUM, 1891. 



873. Public and Domestic Hygiene — Continued. 



Apparatus for rarvying off, receiviuu' and treating sewage. Slaughter-house 

 refuse, city garbage. 



Apparatus and methods for filtering water and cleansing water courses. 



Apparatus intended for the prevention of infectious diseases. Methods, ma- 

 terials and instruments for purifying and destroying germs and disinfect- 

 ing. 



Meteorological instruments, such as are used in climatological investiga- 

 tions: Barometers, aneroids, thermometers, earth tliermometers, ther- 

 mometer stands, hygrometers, anemometers, air meters, rain gauges, au- 

 tomatic meteorological apparatus, sunshine rei)ort('rs, evaporation gauges, 

 ozone papers, ozonometers, etc. 



Diagrams, models, and apparatus illustrative of (a) the climatal conditions 

 prevailing in various parts of tlie world; (h) the relations between health 

 and disease; (c) rainfall, percolation, evaporation and flow from ground; 

 and (d) other subjects embraced by the exhibition. 



874. Hygiene of the Workshop and Factory. (Classification modified from 



that of the London Health Exhibition.) 



Designs and models for improvements in the arrangements and construction 

 of workshops, especially those in which dangerous or unwholesome proc- 

 esses are comlucted. 



Ai)paratus and fittings for preventing or minimizing the danger to health 

 or life from carrying on certain trades: Guards, screens, fans, air jets, 

 preservative solutions, washes, etc. 



Objects of personal use: Mouthpieces, spectacles, dresses, hoods, etc., for 

 use in certain unhealthy and poisonous trades. 



Illustrations of diseases and deformities caused by unwholesome trades and 

 professions. Methods of combating these diseases. Preservative meas- 

 ures, etc. 



Sanitary construction and inspection of workshops, factories and mines. 

 New inventions or improvements for ameliorating the condition of life of 

 those engaged in unhealthy ociupatious. Means for economizing human 

 labor in various industrial operations. 



Literature, statistics, diagrams, etc. 



875. Hygiene of the ScHOf)L-ROOM. 



Designs and models of improved buildings for elementary schools, infant 



schools, and creches. 

 Apparatus and fittings for warnung, vtMitilating and lighting schools, school 



latrines, closets, etc. 

 Special school fittings for storing and dryiuj; clotliing. 

 School kitchens and arrangements for school canteens. Methods of warming 



children's meals, etc. 

 Precaution in schools for preventing the s^ucad of infections diseases, school 



sanitaria, infirmaries, etc. 

 Special apparatus for physical training in sciiools. gymnasia; apparatus for 



exercise, drill, etc 

 Literature, statistics, diagrams, etc., relating to school hygiene. 



876. Life-saving. 



Life-saving at fires and prevention of tire. 



Means for rendering materials incombustible, and for preventing the spon- 

 taneous combustion of coal. Fire-proofrooms and safes. Fire alarms and 

 alarm systems. Fire indicators. Apparatus and chemical substances for 

 giving alarms. Fire engines. Firemen's equipments. Fire escapes. 



Lightning conductors. 



Safety from floods — appliances for indicating a rise in the water of rivers. 



