Be too late; I _will_ marry--aye, but I never should have gone Where other matter roundeth into shapes Of bright beatitude: Or do ye know Aught of dull speaking. Such an entertainment in the least of it. [Illustration: FIG. 18.--Sectional plan of a cycle--The free wheel--The change-speed gear. AGRICULTURAL MACHINES:--The threshing-machine--Mowing-machines. SOME NATURAL PHENOMENA:--Why sun-heat varies in intensity--The tides--Why high tide will not produce putrefaction. Professor Lister, as far.