The conclusion, that 鈥榯he motive force in birds鈥?wings is apparently ten thousand times greater than the resistance of their weight,鈥?is erroneous, of course, but study of the translation from which the foregoing excerpt is taken will show that the error detracts very little from the value of the work itself. Borelli sets out very definitely the mechanism of flight, in such fashion that he who runs may read. His reference to 鈥榯he use of a large vessel,鈥?etc., concerns the suggestion made by Francesco Lana, who antedated Borelli鈥檚 publication of De Motu Animalium by some ten years with his suggestion for an 鈥榓erial ship,鈥?as he called it. Lana鈥檚 mind shows, as regards flight, a more imaginative twist; Borelli dived down into first causes, and reached mathematical conclusions; Lana conceived a theory and upheld it鈥攖heoretically, since the manner of his life precluded experiment. Col. No, what of him? He seems in a good deal of distress of mind, father. Chapter 18 久久re热这里只是精品 久久这里只有精品视频6 It brings some dreadful recollections. Castalia heard, scarcely listening. The words flowed by her like a tune that brings tears to the eyes by mere sympathy with its sad sound. 鈥楢nd do you presume to dictate to me what I shall do and what I shall not?鈥?asked he. Oh, I daresay you're very sorry that I am Mrs. Errington. I have no doubt you repent.