Abstract
SINCE Menter's observation1 on electron microscope images of crystal lattices of metal phthalocyanines, several authors2–7 have observed a variety of lattices in this way. Interpreting the image in terms of the kinematic theory of electron diffraction and Abbe's theory of image formation, Menter concluded that it should consist of parallel lines with equal spacing. He measured3 the spacings of many images of platinum phthalocyanine and concluded that their average value does in fact coincide with the spacing of the lattice planes. Uyeda et al. 8 suggested that an image of the superlattice spacing of about 90 A. observed in antigorite crystals is useful for checking the magnification of electron micrographs because of its constancy.
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