123. Name some of the wonders of the heart.
124-126. What is the lymphatic circulation? What is the thoracic duct? The lymph? The glands? What is the office of the lymphatics? What are the lacteals? Give some illustrations of the action of the lymphatics of the different organs. Should we use care in selecting wall paper? What is meant by the subcutaneous insertion of morphine? How do hibernating animals live during the winter? What is a congestion? Its cause?
127. What is blushing? Why does terror cause one to grow cold and pale? How is an inflammation caused? Name its four characteristics.
128. How may severe bleeding be stopped? How can you tell whether the blood comes from an artery or a vein? Why should you know this? What is the scrofula? What are "kernels"?
129, 130. How may a scrofulous tendency of the system be counteracted? What kinds of food stimulate this disease? What is the cause of a "cold"? Why does exposure sometimes cause a cold in the head, sometimes on the lungs, and at others bring on a rheumatic attack? Why is a cold dangerous? Ans. It weakens the system and paves the way for other diseases. What is the theory of treating a cold? Describe the method. What is catarrh? Cause?
131, 132. How is alcohol produced? Is alcohol present in domestic wines and home-brewed ales? Are they, then, harmless drinks? What is a ferment? (See also pp. 300, 301.) What is the difference between ferments, bacteria, microbes, and fungi? Ans. A few investigators still look upon the microorganisms known as bacteria and microbes as animal existences, but the larger part now concede them to be vegetable.
133. What is the effect of fermentation? What can you say concerning yeast?
134. Explain the process of making beer. Wine. What is distillation?
135, 136. Is there more than one kind of alcohol? What can you say of methyl alcohol? Amyl? Ethyl? Which is the ordinary alcohol of commerce? What is the peculiar effect of fusel oil? Is it often found in wines and spirits? Has alcohol any beneficial properties?
137, 138. Describe one of the striking effects of alcohol. What is the effect of alcohol on plant and animal life?