Differing radically in appearance from any other war tank, a mobile fortress resembling a two-headed frog has been designed by Cleveland W. Cole, of Los Angeles, Calif,, for submission fo the War Department. The tank would have sharply sloping sides and ends made of arc-welded steel castings, presenting a difficult target for attackers since their shells would be deflected. Eight main guns would protrude through “eyeball” sockets capable of turning in any direction. The inventor also asserts he has developed an instrument which will permit the ejection of nitroglycerin. from army tanks. Heretofore this has not been possible because the powerful explosive would blow up the tank itself in the process.