what do the beggars infer about kino and juana

The beggars infer by observation that Kino and Juana are poor.

And the newcomers, particularly the beggars from the front of the church who were great experts in financial analysis, looked quickly at Juana's old blue skirt, saw the tears in her shawl, appraised the green ribbon on her braids, read the age of Kino's blanket and the thousand washings of his clothes, and set them down as poverty people and went along to see what kind of drama might develop.