Mary - what evidence do you possess that has lead you to the conclusion that some crop circles are not man-made?
All the picture in the pamphlet appears to show a circular formation, it is unlikely that the artist visited the field in question (assuming that these events even occurred). Pure coincidence cannot be ruled out as an explanatio of the similarity between this artist's impression of a mown field and modern crop circles.
Here is Wikipedia's rendition of the story.
| The Mowing-Devil: or, Strange News out of Hartford-Shire is the title of an English woodcut pamphlet published in 1678. |
The pamphlet tells of a farmer who, refusing to pay the price demanded by a labourer to mow his field, swore that he would rather that the Devil mowed it instead.
According to the pamphlet, that night his field appeared to be in flame. The next morning, the field was found to be perfectly mowed - supernaturally perfect, in fact.
This pamphlet, and the accompanying illustration, is often cited as among the first recorded cases of crop circles by cereologists.
Compare the figure of Puck, a pre-Christian sprite who might be induced to do farm-work or housework.