"Mustn't tell," he replied sternly, and by such ready confession of mystery laid himself open to all the perils of attack. That other mariner must know he was bound on secret service, and perhaps by playing the part of Thomas Grey on the other side of the round pond, would probably be admitted into confidence. There is no knowing. You can never be sure of what may happen in a world of romantic adventure.

John watched their departure lest his eagerness to talk to her alone should seem too apparent. Then he turned, suggested a seat under the elm trees and, in silence, they walked across the grass to the two little penny chairs that stood expectantly together.

There they sat, still in silence, watching the people who were promenading on the path that circles the round pond. Nurses and babies and perambulators, there were countless of these, for in the gardens of Kensington the babies grow like the tulips--rows upon rows of them, in endless numbers. Like the tulips, too, the sun brings them out and their gardeners take them and plant them under the trees. Every second passer-by that sunny morning in April was a gardener with her tulip or tulips, as the case might be; some red, some white, some just in bud, some fully blown. Oh, it is a wonderful place for things to grow in, is Kensington Gardens.

But there were other pedestrians than these. There were Darbys and Joans, Edwards and Angelinas.

Then there passed by two solemn nuns in white, who had crosses hanging from their waists and wore high-heeled shoes.

The lady of St. Joseph looked at John. John looked at her.

She lifted her eyebrows to a question.

"Protestant?" she said.

John nodded with a smile.

That broke the silence. Then they talked. They talked first of St. Joseph.