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Landois has recently found in certain Orthoptera rudimentary structures closely similar to the sound-producing organs in the Homoptera; and this is a surprising fact. See 'Zeitschrift fur wissenschaft Zoolog. B. xxii.
Landois, professor of physiology at Griefswalt, has been long urging a reinvestigation of Gall's doctrines; Dr. R. Sommer, professor of clinical psychiatry at Griessen, recommends it, not dogmatically, but as a working hypothesis; and the Swiss professor of physiology, Dr. Von Bunge, in his text-book just published, acts as pioneer in devoting two chapters to a rehabilitation of Gall; Dr.
The most extraordinary thing about this extraordinary article still remains to be told. It was written, we may suppose, between 1757 and 1762, or about that time. In June, 1756, Diderot wrote to a certain Landois, a fellow-worker on the Encyclopædia, a letter containing the most emphatic possible repudiation of the whole doctrine of Liberty.
But it is conceivable that the now utterly lost branchiae might have been gradually worked in by natural selection for some distinct purpose: for instance, Landois has shown that the wings of insects are developed from the trachea; it is therefore highly probable that in this great class organs which once served for respiration have been actually converted into organs for flight.
Landois, H., gnats attracted by sound; on the production of sound by the Cicadae; on the stridulating organ of the crickets; on Decticus; on the stridulating organs of the Acridiidae; stridulating apparatus, in Orthoptera; on the stridulation of Necrophorus; on the stridulant organ of Cerambyx heros; on the stridulant organ of Geotrupes; on the stridulating organs in the Cleoptera; on the ticking of Anobium.
Landois also asserts that he has repeatedly drawn down a whole swarm of gnats by uttering a particular note. It may be added that the mental faculties of the Diptera are probably higher than in most other insects, in accordance with their highly- developed nervous system. See Mr. B.T. Lowne's interesting work, 'On the Anatomy of the Blow-fly, Musca vomitoria, 1870, p. 14. Mr.
By this method many investigations have been made of muscular contractions in isolated muscles. Landois has noted that the muscles of a man may be made to contract two hours and a half after removal, those of the frog and the tortoise 10 days after. Recently Burrows has noted a slight increase in the myotomes of the embryo chick after they have been kept for 2 to 6 days in coagulated plasma.
Auguste had got so far in his narrative when the fifth floor was reached; however, he still detained Florent, in order to sound the praises of Madame Quenu, who had consented to send for Augustine Landois to replace an assistant who had turned out badly. He himself was now thoroughly acquainted with his part of the business, and his cousin was perfecting herself in shop management.
He had at first come to Paris merely for the purpose of perfecting himself in the business, intending to return to Troyes, where his cousin, Augustine Landois, was waiting for him, and there setting up for himself as a pork butcher. He and she had had the game godfather and bore virtually the same Christian name.
We have already mentioned the name of Landois in connection with Diderot's article on Liberty. Landois seems to have been a marvel of unreasonableness, but he was a needy man of letters, and that was enough to make Diderot ready to bear with him and to succour him.
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