New Rockets Part FiendJ Sax Swedes By Bob Considine Stockholm, Sept. 26 ( I N S ) .Rus slan rockets which hav been ap- pearing ver Sweden since early last June are of an astonishin? new type which S w e d i s h air f o r c e inform- ants assert a r e ! fa r superior to th e G erm an V-I, V-2 and sim ilar A m erican pro- An air force ( officer, one of j th e few Swedish officials who willi Considine talk about the rockets, said today they perform with a partly human, partly fiendish intelligence.' The rockets hav been coming ver in several shapes, all suffi- ciently large to contain an atomic bomb warhead. The most efficient design appears to resem ble th e V-I buzz bomb. somewhat enlarged, but with a startling versatility. Though dozens of these bombs hav streaked ver Sweden by conservative estim ates, none has left a crater. Those which landed simply disappeared. This spooky evanescence is the source of chief worry, especially be- cause no explosions hav been re ported. Nor has th ere been, any trace of debris or bomb pits a t the spots ver which the rockets were last seen. The only explanation for this phenomenom, said the officer, is th a t the rockets may be able to con- sume them selves completely at a controlled moment.