"Have you heard anything about the other crew yet, Mr. Giddings?" inquired Paul. "I mean, do you know what sort of a craft they are going to use, or who is going to fly against us?"

"I am as much in the dark about those points as you young men," was the reply. "I judge that Mr. Wrenn, who is an astute business man, will keep us in ignorance of his personnel until the last minute. The fact is, I am going to treat him to a dose of his own medicine in this respect. So be careful not to let the public get close to this machine, and talk with no one about it."

With that the publisher and Bob drove home, but the latter came back in the afternoon, and all four young men immediately repaired to the Yonkers Public Library with a blank tablet, there to work out the route and schedule.

It was no easy task. In the first place, they wished the route to be as close to the equator at all times as possible, so that their line of travel would approximate in distance the world's estimated circumference of 24,899 miles. In the second place, for stops they must choose cities or towns with either established landing-fields, or with grounds level enough for this purpose. In the third place, these airports must be so divided that they would not have to be visited during the hours of darkness, for few if any of them would be likely to have efficient enough lighting systems to make night landings safe.

Within fifteen minutes the boys had the long table in front of them literally covered with geographies, atlases, loose maps, and encyclopaedias. Paul even brought up a globe as large as a pumpkin, while Bob was not content until he had secured a score of back numbers of travel magazines. Into this divers collection of diagrams and reading matter they dove with an avidity which would have surprised the teachers they had when they were in grammar school, if they could have seen them. It soon became evident that they would not only need a route and schedule to make their journey successful, but also an enormous amount of general information about the countries they would pass over.

"We'll have to study trade winds, oceanic storm conditions, temperatures, inhabitants, topography, and so forth, and so forth," drawled Tom Meeks. "Say, fellows, I feel like kicking myself to think I didn't study my geography more and shoot paper-wads less, when I was a kid at school."

"We'll have to do a lot of cramming, that's sure," averred John; "but we have several months for that. Just now we want to jump into this route and schedule."

They made up several tentative routes, only to discard them. Finally, after several hours' work, they had one which everybody seemed to agree was the best that could be picked out. With the schedule, which was figured on the basis of 120 miles an hour airplane speed, the draft looked like this:

Miles Airport Arrive Leave
—— PANAMA —————— 1:00p 20th
1672 Georgetown 5:30a 21st 7:30a 21st
1154 Para 6:00p 21st 9:00p 21st
2402 Freetown 6:15p 22d 9:15p 22d
1980 Kuka 1:00p 23d 8:00p 23d
2015 Aden 6:00a 24th 9:00a 24th
2116 Colombo 5:30a 25th 8:30a 25th
1612 Singapore 6:00p 25th 9:00p 25th
2218 Port Darwin 5:30p 26th 8:30p 26th
3826 Apia 5:45a *27th 8:45a 27th
2100 Nukahiva 9:00a 28th 12:00n 28th
3154 San Cristobal 6:00p 29th 9:00p 29th
650 PANAMA 5:30a 30th ——————-
——-
24899

* Gain of 1 day by reason of crossing 180th Meridian, or International
Date Line, between Port Darwin and Apia.