"I'm not Dum! I'm Dee! Dum's gone to peek at Zebedee to see if he is awake." For the first time in my acquaintance with the Tucker Twins I found myself at a loss to tell them apart. Of course it was Dee. The eyes were grey and there was a dimple in her chin, but the bathing cap concealed her hair and forehead; and, after all, the colour of the twins' hair and the way it grew on their foreheads were the chief points of difference. Their eyes were exactly the same shape if they were of different colours, and a difference that you had to stare at to find out was not much of a difference after all.
Dum came back to announce that Zebedee was awake and would join us in a moment, so we raced down to the kitchen, careful not to make any noise and wake up poor Miss Cox. We started the fire and put on the tea kettle and, as an afterthought, I went back and filled the Marion Harland percolator, putting in plenty of coffee. The morning was rather chilly and I knew that when we got back from our dip, coffee would not go amiss.
"Front door wide open! What kind of a locker-up are you, Zebedee, anyhow?" chided Dum.
"Well, I could have sworn I shut it last night and locked it. In fact, I can swear it."
"Well, if we had burglars they didn't burgle any. The pure German silver is all intact and the blue tea-pot is still on the mantelpiece. Come on, I'll race you to the water's edge," and Dum and Zebedee were off like two children, while Dee and I followed.
"Someone's out ahead of us," said Zebedee, pointing to a head far out in the bay. "Some swimmer, too! Just look how fast he's going!" The swimmer was taking long, even strokes and was shooting through the water like a fish.
How I did envy that swimmer! I felt very slim and very shy as I walked gingerly to the water's edge and let the waves creep up on my feet and ankles. The Tuckers wanted to stay with me but I would not hear of it. I knew that they were longing to get out into deep water and I have always had a wholesome dread of being a nuisance. They plunged in and were off like a school of porpoise, one minute under water and the next leaping high into the air. They seemed to be truly amphibious animals while I felt very much of an earthworm. I walked out in the bay up to my chin and then decided that I would try to swim back, although I had no more idea of how a body went to work to swim than to fly.
I lay down on the water and felt my feet rising to the surface and then a panic seized me, and such another struggling and splashing and gurgling as I was guilty of! My head went under and my feet refused to leave the surface. I thought I would surely drown, although I knew perfectly well I was not beyond my depth. Foolish poetry flashed into my brain:
"You are old, Father William," the young man said,
"And your hair has become very white,
And yet you incessantly stand on your head—
Do you think, at your age, it is right?"
"In my youth," Father William replied to his son,
"I feared it might injure the brain;
But now that I'm perfectly sure I have none,
I do it again and again."