ALL scientific workers whose research has brought them into contact with military authority during the war must appreciate the leading article on “Science and the New Army” in NATURE of March 18, especially the sentences in which it is urged that “science linked to the Army by fussy research co-ordinators acting under a nescient soldier will not solve the difficulty,” and that “science will not occupy its rightful position in the new Army” until the General Staff includes a due proportion of officers who are endowed with a scientific spirit and have received a scientific training. Until then some of the outstanding defects manifested during the war will continue. These defects are:—