She made outlines of several trees, and had she but been possessed of perseverance enough to have perfected herself in that part, before she attempted to go farther, all would have been easy and pleasant; but Jemima knew nothing of perseverance or patience, and insisted on having a finished landscape to do directly; and the master, to shew her how incapable she was of executing such a thing, indulged her in her fancy: but when he endeavoured to explain to her the nature of perspective, light and shadow, and several other rules necessary for her to understand, Jemima dropped the pencil from her fingers. She had not perfectly comprehended his meaning, and wanted resolution to question him, and endeavour to make it clearer, and once more concluded she never should be able to make any thing of it, and that it would be much more prudent to turn to some other pursuit.