no diddies to speak of."
Deryn's jaw dropped open, her arms crossing over her chest. "And you're a bum-rag covered in clart!"
Jaspert laughed, slapping her hard on the back. "That's the spirit. I'll have you swearing like a navy lad yet."
The London omnibuses were much fancier than those back in Scotland - faster, too. The one that took them to the airship field at Wormwood Scrubs was drawn by a hippoesque the breadth of two oxen across the shoulders. The huge, powerful beast had them nearing the Scrubs before dawn had broken.
Deryn stared out the window, watching the movements of treetops and windblown trash for hints about the day's weather. The horizon was red, and the Manual of Aerology claimed, Red sky in morning, sailors take warning. But Da had always said that was just an old wives' tale. It was when you saw a dog eating grass that you knew the heavens were about to split.
Not that a drop of rain mattered - the tests today would be indoors. It was book learning the Air Service demanded from their young midshipmen: navigation and aerodynamics. But staring at the sky was safer than reading the glances of the other passengers.
Since getting on the bus with Jaspert, Deryn's skin had itched with wondering what she looked like to strangers. Could they see through her boy's slops and shorn hair? Did they really think she was a young recruit on his way to the Air Proving Ground? Or did she look like some lassie with a few screws loose, playing dress-up in her brother's old clothes?
The omnibus's next to last stop was at the Scrubs' famous prison. Most of the passengers disembarked there, women carrying lunch pails and gifts for their men inside. The sight of barred windows made Deryn's stomach churn. How much trouble would Jaspert be in if this ruse went wrong? Enough to lose his position in the Service? To send him to jail, even?
It just wasn't fair, her being born a girl! She knew more about aeronautics than Da had ever crammed into Jaspert's attic. On top of which, she had a better head for heights than her brother.
The worst thing was, if the boffins didn't let her into the Service, she'd be spending tonight in that horrible rented room again, and headed back to Scotland by tomorrow.
Her mother and the aunties were waiting there, certain that this mad scheme wouldn't work and ready to stuff Deryn back into skirts and corsets. No more dreams of flying, no more studying, no more swearing! And the last of her inheritance wasted on this trip to London.
She glared at the three boys riding in the front of the bus, jostling each other and giggling nervously as the proving ground drew closer, happy as a box of birds. The tallest hardly came up to Deryn's shoulder. They couldn't be so much stronger, and she didn't credit that they were as smart or as brave. So why should they be allowed into the king's service and not her?
Deryn Sharp gritted her teeth, resolving that no one would see through her disguise.
There couldn't be that much trick to it, being a stupid boy.
The line of recruits on the ascension field weren't impressive. Most looked barely sixteen, sent off by their families to find fortune and advancement. A few older boys were mixed in with the others, probably middies coming over from the navy.
Looking at their anxious faces, Deryn was glad to have had a father who'd taken her up in hot-air balloons. She'd seen the ground from on high plenty of times. But that didn't keep her nerves from playing up. She almost reached for Jaspert's hand before realizing how that would look.
"All right, Dylan," he said quietly as they neared the desk. "Just remember what I told you."
Deryn snorted. Last night Jaspert had demonstrated how a proper boy checked his fingernails - looking at his palm, fingers bent, whereas girls looked at the backs of their hands, fingers splayed.
"Aye, Jaspert," she said. "But if they ask me to do my nails, don't you think the jig's up already?"
He didn't laugh. "Just don't draw attention to yourself, right?"
Deryn said nothing more, following him to the long table set up outside a white hangar tent. Three officers sat behind it, accepting letters of introduction from the recruits.
"Ah, Coxswain Sharp!" one said. He wore the uniform of a flight lieutenant, but also the curve-brimmed bowler hat of a boffin.
Jaspert saluted him smartly. "Lieutenant Cook, may I