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Scientific American, Vol. 67, No. 13 (1892) (1892)

leaf 4

An illustration from Scientific American, Vol. 67, No. 13 (1892), 1892, leaf 4
uble table having on its under side flanges extend- from this ratio as follows: ing into the path of an arm fixed to the driving shaft, The difference is taken between the year for which by which the table is turned a fourth of a revolution it is desired to predict or verify the trotting speed and… … SONS TEPOTLING...6...seeeee se cee 148 53 his experiments on caterpillars hatching in pill boxes. Total investment....cseees-.eeereeeuee $14,605,787 $72,341,736 Gross Carnings ..........cceeeeessecees 8,098,081 16,404,583 The pepper moth was the particular insect which he Gro88 EXPENSES…

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