of it. Sandy Hook is in longitude 74°, or it is that number of degrees west of Greenwich. Aden is in 45° east longitude."
"Then you find how many miles it is by multiplying the number of degrees by 69," suggested Miss Blanche.
"You have forgotten about knots, or sea-miles," said Louis.
"So I have! I should have said multiply by 60," added the young lady.
"That would not do it any better," replied Scott.
"Degrees of latitude are always the same for all practical purposes; but degrees of longitude are as--
'Variable as the shade By the light quivering aspen made,'"
continued the third officer, who was about to say "as a woman's mind;" but he concluded that it was not quite respectful to the lovely being before him.
"What a poetical sea-monster you are, Mr. Scott!" exclaimed Miss Blanche with a silvery laugh.
"I won't do so any more," Scott protested, and then continued his explanation. "Degrees of longitude vary from nothing at the poles, up to 69.07 statute, or 60 geographical