"If it is Dickon you will be safe enough.

He's as strong as a moor pony, is Dickon." "And he's trusty," said Mary.

"He's th' trustiest lad i' Yorkshire." She had been talking Yorkshire to Colin and she forgot herself.
"Did Dickon teach you that ?" asked Dr.Craven, laughing outright.
"I'm learning it as if it was French," said Mary rather coldly.

"It's like a native dialect in India.

Very clever people try to learn them.