MS 611-15

1907 Nov 20

of the interesting facts that which, by arousing men's curiosity, caused some to become the first astronomers. I therefore do not call it a fact of astronomy, although it is not doubt a fact of astronomy that the average lunation is 29 days 12 hours 43 minutes and 27 second. The point will seem to you a very trifling attempt to split a hair; but you will for soon find that it has some importance; or rather that analogous facts connected with other sciences have.