John Cowley An appendix to the elements of Euclid book . en Containing Fortytwo Copperplates In Which the Doctrine of Solids Delivered in the XIth XIIth and XVth Books of Euclid is Illustrated by Newinvented Schemes Cut Out of PasteBoard London sold by Mr Watkins it An Appendix to Euclid's Elements in Seven Books contenente quarantadue