II. Sub-topic 1.—Our interest in bacteria, arising out of the injury or good they do:
(a) Injury: Decay of fruits, trees, tissues, etc., diseases—diphtheria, typhoid, tuberculosis; how developed, conditions, favourable toxins.
(b) Benefits: In soil, cheese, butter, etc.; chemical action, building new compounds and breaking up other compounds.
III. Sub-topic 2.—Our interest in controlling them; the methods based on mode and conditions of growth, etc.:
(a) Prevention: Eliminating favourable conditions; low temperature, high temperatures, cleanliness; sewerage disposal; clean cow-stables, cellars, kitchens, etc.; antiseptics—carbolic, formalin, sugar for fruit, sealing up; quarantine, vaccination, antitoxin.
(b) Cultures,—alfalfa, cheese, butter, under control.
GEOGRAPHY OF EUROPE
I. Topic.—Europe:
What interest to us; why we study it; position, latitude, near water, boundaries, size; Surface features—highlands, lowlands, drainage rivers, coast-line, etc. Climate—temperature (means, Jan., July), wind, moisture.
II. Sub-topic 1.—Products (based on above conditions):