, because the wind does not press on the sail at all. the interior arrangements. Now, let the reader carefully bear in mind that these little horizontal section of a heating tube. arrows represent the total effect of the wind upon the sail. There is no other effect upon it worth considering here.… … the upper edge of which comes in con- the truck, parallel to the line of rails, as YOUNG'S HOT BLAST OVEN. tact with the lower sides of the next in Fig. 7, we shall get no motion of tier of pipes above, thus affording a firm support and pre- venting vertical deflection. rand their teaching is more…
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