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THE POPULAR SCIENCE MONTHLY
natural form, so that at the first glance you would swear the little animal was still standing there. "Now," says Friedel, "As I read this, it can scarcely be told how saddened I was, for the hope I had previously conceived was falling into ruin." The account of GÅ“dart did not really seem to confirm the hypothesis about the cochineal, for there was no description of.any stage that really corresponded to the grain. Friedel was about to change his opinion in toto, when he "had another seasonable suggestion from the most excellent Dr. Lang, to whose most faithful training I owe almost everything in the course of my medical studies." For as Dr. Lang was the first to suggest to Friedel the theory about the nature of the cochineal which formed the subject of this thesis, so he now came to the rescue with facts and experiments concerning the German ladybird "depicted as in life with an elegant brush in colors, and most accurately noted from day to day," all of which, in the year just passed, Friedel was permitted to observe and confirm with his own eyes.
This is really an excellent account of the ladybird, excepting only the error as to its food, and from these observations Friedel felt encouraged to believe that he had put the finishing touches on his theory of the cochineal; for was not the ladybird pupa just like it? "But," says he, "if perchance this should still seem doubtful, here is a further observation to confirm it. When a friend, addicted to trade, gave me at one time a large enough heap of cochineal to examine, I