23.(Pg. [142]) What occasions the rise and fall of the mercury, in a thermometer?
24.(Pg. [142]) To what height will the pressure of the atmosphere raise a column of water?
25.(Pg. [142]) What governs the difference between the height of the mercury, and of the water?
26.(Pg. [143]) How does the common pump, raise water from a well?
27.(Pg. [143]) What is meant by a piston?
28.(Pg. [143]) Describe the construction, and use, of a valve.
29.(Pg. [143]) What are the parts of the pump, as represented, [fig. 4, plate 14.]?
30.(Pg. [144]) How do these parts act, in raising the water?
31.(Pg. [144]) In what does that which is commonly called suction, consist?
32.(Pg. [144]) How must the piston be situated in the pump?