of 1 29 millimeter diameter ofhc wire with a grain structure the reached pulling strength of 365 newtons per square millimeter is the maximum pulling strength such a wire will resist without adding an alloy which will reduce its electrical conductivity the variation in pulling length indicates the unreliability of the grain structure another demonstration of the well higher quality is given in fig1 and 12 in which high purity aluminum was grown into single crystals which were deformed into wires pieces of the wires were ground down to the middle polished and etched and photographed through a microscope the difference in density is shown in fig1 and 12 and is self explanatory the rods in fig1 present aluminum with a purity of 99 999 from which the lower wire has been formed and also some single crystals of aluminum were grown from one single crystal was deformed into a wire the picture was taken with one flash and one can see the white color of the aluminum crystals that demonstrates the higher density of the crystal structure the fine tips at one end of the rods are the seeding point from which the crystal starts to grow any impurities in particular light elements will be removed during the process from the tips to the other end of the crystal the pieces shown in fig1 were cut from wires and embedded in plastic ground down to the middle of the wire then etched and pictures were taken.