522 



REPORTS ON THE STATE OF SCIENCE. 



closed at one end, and in the open air. Inflammable gases produced which burn 

 only when they meet the air. Carbon or charcoal, which will not burn in the 

 tube, but in the open air, always burns without flame, leaving a small amount of 

 mineral ash. 



Preparation and examination of oxygen. All substances that burn in air burn 

 more vigorously in oxygen, producing the same products of combustion as when 

 burnt in air. 



Carbon burnt in a slow stream of oxygen gas. Preparation and properties of 

 carbonic acid gas (oxide of carbon). Air breathed from our lungs contains carbonic 

 acid gas. Analysis of carbonic acid gas by burning magnesium in the gas. 



Nature of acids — corrosive, dissolve metals and many mineral substances 

 insoluble in water ; the action of acids — e.g., vinegar, spirits of salt — upon chalk, 

 washing-soda, bread-soda. The action of acids on vegetable colouring matters. 

 Preparation and properties of 'chalk gas' obtained by action of acids on chalk, 

 marble, soda, &c. 



The nature of alkalis — lime, soda, ammonia — their action on colouring matters 

 and upon acids. E.vacth/ neutralise some acid, eg., spirits of salt, with an alkali, 

 e.g., soda, and show that the resulting compound is neutral, possessing neither the 

 properties of acids nor alkalis. 



The burning of food in the human body a sort of slow or wet burning, which 

 maintains the temperature of the body many degrees above that of its surroundings. 

 Carbon the chief constituent of the body food or fuel, and carbonic acid gas the 

 principal product of combustion. 



The principal functions of the digestive organs treated very simply to show 

 how food i.s transferred to the blood stream, and so becomes available for nourishing 

 the whole of the body. 



The importance of germs in daily life; germs or bacteria are minute moulds, 

 which break up complex organic matter into simpler substances ; some kinds are 

 harmless to man, others if introduced into the blood stream cause diseases, eg., 

 measles, typhoid, small-pox ; bacteria thrive best under conditions of darkness, 

 moisture, warmth, and dirt. Necessity for cleanliness, fresh air, and sunlight. 



APPENDIX D. 



List of Apparatus for Elementary Science Course. 



For a School NOT provided with a special Science Room in which experimental 

 work can be carried out by all the Pupils simultaneously. 



