H.P. Lovecraft and Hazel Heald

“ I disposed of all the hybrids—stained and unstained—that I didn’t send to Moore, and can’t recall any instance of escape.
Can this be wholly an hallucination? Or could any of the specimens that escaped in Brooklyn when Moore was bitten have found their way back to Africa? There was that absurd story of the blue fly that waked Dyson when Moore died—but after all, the survival and return of some of the things is not impossible. It is perfectly plausible that the blue should stick to their wings, too, for the pigment I devised was almost as good as tattooing for permanence. ”

“ July 7—New hybrids are out! Disguise is excellent as to shape, but sheen of wings still suggests palpalis. Thorax has faint suggestions of the stripes of the tsetse. Slight variation in individuals. Am feeding them all on tainted crocodile meat, and after infectivity develops will try them on some of the blacks—apparently, of course, by accident. There are so many mildly venomous flies around here that it can easily be done without exciting suspicion. I shall loose an insect in my tightly screened dining-room when Batta, my house-boy, brings in breakfast—keeping well on guard myself. ”

“ Thirty years ago there was an epidemic that killed off thousands of natives in Uganda, and it was definitely traced to a rare fly called Glossina palpalis—a sort of cousin of the Glossina marsitans, or tsetse. It lives in the bushes on the shores of lakes and rivers, and feeds on the blood of crocodiles, antelopes, and large mammals. When these food animals have the germ of trypanosomiasis, or sleeping-sickness, it picks it up and develops acute infectivity after an incubation period of thirty-one days. Then for seventy-five days it is sure death to anyone or anything it bites. ”

“ It ought not to be hard to find an insect that scares the blacks so much. First to see how poor Mevana turns out—and then to find my envoy of death.
Jan. 7—Mevana is no better, though I have injected all the antitoxins I know of. He has fits of trembling, in which he rants affrightedly about the way his soul will pass when he dies into the insect that bit him, but between them he remains in a kind of half-stupor. Heart action still strong, so I may pull him through. ”

“ The notion was maniacal, for that would argue a human intellect and a knowledge of written figures in the hybrid fly. A human intellect—did not that take one back to the most primitive legends of the Uganda blacks? And yet there was that infernal cleverness in eluding me as contrasted with the normal stupidity of the breed. As I laid aside my folded paper and sat down in growing horror, the insect buzzed aloft and disappeared through a hole in the ceiling where the radiator pipe went to the room above. ”

“ Mevana has fixed up a fly-trap of fine wire netting baited with crocodile meat. It has a small entrance, and once the quarry get in, they don’t know enough to get out. As stupid as they are deadly, and ravenous for fresh meat or a bowl of blood. Hope we can get a good supply. I’ve decided that I must experiment with them—finding a way to change their appearance so that Moore won’t recognise them. Possibly I can cross them with some other species, producing a strange hybrid whose infection-carrying capacity will be undiminished. ”

“ Tomorrow I shall not under any circumstances open any crevice of door or window. When the food and linen came the black looked at me queerly, but I no longer care how eccentric—or insane—I may appear. I am hounded by powers worse than the ridicule of mankind. ”

“ When I looked at the ink-trail on the ceiling from different angles, it seemed more and more familiar to me, and it dawned on me suddenly that it formed an absolutely perfect question-mark. What device could be more malignly appropriate? It is a wonder that I did not faint. So far the hotel attendants have not noticed it. Have not seen the fly this afternoon and evening, but am keeping my inkwell securely closed. I think my extermination of Moore must be preying on me, and giving me morbid hallucinations. Perhaps there is no fly at all. ”

“ The nearest thing to it is the bacillus one finds in oxen, horses, and dogs that the tsetse-fly has bitten; but tsetse-flies don’t infect human beings, and this is too far north for them anyway.
However—the important thing is that I’ve decided how to kill Moore. If this interior region has insects as poisonous as the natives say, I’ll see that he gets a shipment of them from a source he won’t suspect, and with plenty of assurances that they are harmless. Trust him to throw overboard all caution when it comes to studying an unknown species—and then we’ll see how Nature takes its course! ”

“ Indeed, that’s more probable than not; for the palpalis half of his heredity would naturally take him back to Uganda, and all the trypanosomiasis germs. I still have some of the tryparsamide left—I couldn’t bear to destroy my medicine case, incriminating though it may be—but since reading up on the subject I am not so sure about the drug’s action as I was. It gives one a fighting chance—certainly it saved Gamba—but there’s always a large probability of failure.
It’s devilish queer that this fly should have happened to come into my room—of all places in the wide expanse of Africa! ”

“ It certainly is peculiar that this should happen just as Batta died. If any black had seen it, he’d have laid it at once to the absorption of the poor devil’s soul. I shall start my blue-stained hybrids on their way before long now. The hybrid’s rate of killing seems a little ahead of the pure palpalis’ rate, if anything. ”

“ Obviously, Moore was a bigger character in Africa than I had realised. The insect that bit him has now been fully identified from the surviving specimens and developed larvae, and the wing-staining is also detected. It is universally realised that the flies were prepared and shipped with intent to kill. Moore, it appears, communicated certain suspicions to Dyson, but the latter—and the police—are maintaining secrecy because of absence of proof. ”

“ Van Keulen found a virulent insect bite—dark red, with a purple ring around it—which suggested a tsetse-fly or something less innocuous. An examination indicated that death must be due to heart-failure induced by sheer fright rather than to the bite—though a subsequent autopsy indicated that the germ of trypanosomiasis had been introduced into the system. ”

“ Batta died three months and eight days after infection—but of course there is always a wide margin of uncertainty. I almost wish I had let Gamba’s case run on.
Dec. 5—Busy planning how to get my envoys to Moore. I must have them appear to come from some disinterested entomologist who has read his Diptera of Central and Southern Africa and believes he would like to study this “new and unidentifiable species”. There must also be ample assurances that the blue-winged fly is harmless, as proved by the natives’ long experience. ”

“ March 12—In Uganda at last! Have five boys besides Mevana, but they are all Gallas. The local blacks couldn’t be hired to come near the region after the talk of what had happened to Mevana. This jungle is a pestilential place—steaming with miasmal vapours. All the lakes look stagnant. ”

“ The best plan will be to take a long vacation in the interior, grow a beard, mail the package at Ukala while passing as a visiting entomologist, and return here after shaving off the beard.
April 12, 1930—Back in M’gonga after my long trip. Everything has come off finely—with clockwork precision. Have sent the flies to Moore without leaving a trace. Got a Christmas vacation Dec. 15th, and set out at once with the proper stuff. Made a very good mailing container with room to include some germ-tainted crocodile meat as food for the envoys. ”

“ It stains the wings blue without affecting the dark thorax much, and doesn’t wear off when I sprinkle the specimens with water. With this disguise, I think I can use the present tsetse hybrids and avoid bothering with any more experiments. Sharp as he is, Moore couldn’t recognise a blue-winged fly with a half-tsetse thorax. Of course, I keep all this dye business strictly under cover. Nothing must ever connect me with the blue flies later on.
Oct. 9—Batta is lethargic and has taken to his bed. Have been giving Gamba tryparsamide for two weeks, and fancy he’ll recover. ”

“ If he recovers, he can certainly shew me where the flies are. He’s a great crocodile hunter, according to report, and knows all Uganda like a book. I’ll give him another shot tomorrow.
Jan. 16—Mevana seems a little brighter today, but his heart action is slowing up a bit. I’ll keep up the injections, but not overdo them.
Jan. 17—Recovery really pronounced today. Mevana opened his eyes and shewed signs of actual consciousness, though dazed, after the injection. Hope Moore doesn’t know about tryparsamide. There’s a good chance he won’t, since he never leaned much toward medicine. ”

“ Fortunately I have a good supply of ammonia. This crude mask will probably neutralise the acrid chlorine fumes till the insect is dead—or at least helpless enough to crush. But I must be quick. How can I be sure that the thing will not suddenly dart for me before my preparations are complete? I ought not to be stopping to write in this journal. ”

“ Van Keulen recognised the name of the dead man the moment he opened the cover, for it was that of an eminent member of his own profession who had been largely connected with African matters. In another moment he was horrified to find this name linked with a dastardly crime, officially unsolved, which had filled the newspapers some four months before. ”