Definition of "solly"

Some years back, when I was leaving China for England with young children, their faithful Chinese nurse kept on repeating to the little ones the following remarkable sentence, "My too muchey solly you go steamah; you no solly my."

1902, Herbert Allen Giles, China and the Chinese‎

"I'm solly," he said; then he seemed to realize more clearly that the lady's honour had to be vindicated before all these "girls," and he repeated more loudly and without being asked, "I'm velly solly."

1908, Ethel Turner, In the Mist of the Mountains‎