Nuclear Physics Methods in Materials Research 53 die immer wieder gewiinschte Herausgabe 9783642096402 die immer wieder gewiinschte Herausgabe meiner im Laufe von drei J ahrzehnten entstandenen Beispielsammlung but the author shows that mites actually possess great diversity and therefore make unique materials for evolutionary and behavioral studies ~hi1st in 1936 it was possible to demonstrate the wave properties and diffraction of neutrons(1)(2) it was not until 1944 with the "pile" CP3 at Argonne National Laboratory that intensities were high enough to stimulate the construction of the first neutron diffractometer and development 22 c 900 A_ UJ DIDO The present European success in neutron physics and in neutron scattering applied to condensed matter research rests upon the subtle interaction of new instrument requirements for an expanding scientific program in Physics