21 APRIL 1950, Page 20

The Flying Saucers SIR.-1 am depressed to find a page

and more of the Spectator devoted to flying saucers. The human eye starts off as a highly organised bud but the central part ends up as a clear jelly. But ghosti remain— shadows of the old blood-vessels—and in certain conditions they can be seen without difficulty. For centuries they have been known, to doctors and medical students, as " flying flies."

If anyone stares at a plain white surface or the blue sky for some time, they will probably see rounded objects floating across the field of vision—apparently crossing the sky. If you get a half-educated popV- lation—that is, people who can read headlines but who believe what they read—and at the same time a scare about flying saucers, it is not surprising that they are often seen. If the Spectator's unfortunate lead is followed in the daily Press, and if we have a good summer with clear skies, we shall have a wave of saucers fairly soon in this country, to the exclusion of more rational matter.—Yours sincerely,