and possibly much that he would have corrected in the present work had his health permitted him to give undivided attention to the work. But it was not to be, and on March 29, 1936 he died on a farm near Pretoria.
Of a singularly attractive nature he was adored by and adored children and especially in his later years could almost always be found in their company. He has a clear and assured niche among the most-noted writers in Afrikaans, and his scientific work and theories written in English have received special notice in America and Europe.
1
The Beginning of a Termitary
Some years ago an article about “white ants”, as termites are commonly but incorrectly called, appeared in a South African journal. Almost everything that naturalists tell us about these insects is important and interesting, and Dr. Hesse’s article was exceptionally so. But the article also made another fact clear; how very little is done in our land to study the behaviour of animals, and how much has been done and is being done in other countries. Everything that Dr. Hesse told us was the result of long and patient observation in America and Europe. None of his facts was exactly relevant to our South African termites.
The life-history of most of our South African ants and termites is in every respect just as wonderful and interesting as anything that has been discovered in South America. Over a period of ten years I studied the habits of termites in an investigation into animal psychology. I then realized that such observation reveals new wonders every day. To mention one instance, the functioning of the community or group-psyche of the termitary is just as wonderful and mysterious to a human being, with a very different kind of psyche, as telepathy or other functions of the human mind which border on the supernatural.
When one wishes to write of all these wonders, one is bewildered by the embarras de richesses. It is hard to know where to begin.
I want to tell you about the commonest of our termites or “white ants”, and what I am going to relate may be observed by anyone who wishes; he may even discover new wonders. Most of these facts have not been published before; indeed, I do not think they have been discovered by scientists.
The common termite which is so destructive to wood of all kinds, and builds “ant-hills” or termitaries on the open veld, is known throughout South Africa. I will tell you a little about the beginning of its community life.
The beginning of a termitary dates from the moment when the termites fly, after rain and usually at dusk, in order to escape their innumerable enemies. Even here we see a remarkable instance of the wonder of instinct. The termites beginning their thrilling flight know nothing about enemies. They have never been outside the nest before. The peril of existence is to them a closed book, and yet nine times out of ten they do not fly until the birds are safely in their nests.
These flying termites are at least twenty times as big as the others of the nest, and quite different in colour and form. You must consider a termitary as a single animal, whose organs have not yet been fused together as in a human being. Some of the termites form the mouth and digestive system; others take the place of weapons of defence like claws or horns; others form the generative organs. These flying termites are the generative organs of the colony. Every one of these winged insects is a potential king or queen. The four beautiful wings have taken months to develop and grow to perfection; months elapse – or even years in very dry districts – before an opportunity for flight occurs. They will never fly until there has been rain, and the reason is obvious. After the flight they must seek immediate shelter in the ground, and when the ground is hard and dry this is impossible.
Follow the flight of the termites carefully from the moment they emerge from the nest. They crawl out of a little opening, thousand upon thousand. There is obviously much excitement in the termitary. Sometimes the flyers are escorted to the opening by workers and soldiers. The first impulse of the flying insect as it emerges is to try its wings. It flutters and essays to lift itself into the air. If it fails, it climbs a grass stalk and takes off from this height. But fly it must, even if it is only for a few inches. You will understand presently why this is so essential, just as necessary as the preservation of its life, and therefore it takes just as much trouble to fly – even more perhaps, for the urge is greater – as to protect itself from enemies.
The watcher will soon become aware that the object of the flight seems to be to spread the insects over as large an area as possible, as some plants disseminate their seed. Some of the termites rise high into the air and travel for miles before they settle; others sink to the ground only a stride or two from the old nest. But far or near, fly they must, or the sole object of their existence is frustrated.
Soldier and worker termites.
Let us watch one of the ants which has flown and settled in the grass near at hand. We will suppose it is female – the two sexes cannot be distinguished with the naked eye. The first thing she does is to discard her wings. This she succeeds in doing by a lightening-like movement – so fast that we cannot follow it with the eye. One moment we see her with her wings intact, the next moment she steps away, and her four wings are lying on the grass – she is much, much quicker than a woman who discards her evening gown and hangs it over a chair. It took months for her wings to grow. For years perhaps she has lived in subterranean darkness, in preparation for this one moment. For a period of three seconds, for a distance of perhaps three yards, she enjoyed the exquisite thrill of flight and with that the object of a great preparation has been fulfilled and the fairy-like wings are flung aside like a worn-out garment.
Winged adult termites.
Immediately the wings are discarded she walks about rapidly for a few seconds. You become aware that she is seeking a suitable place for some further purpose – but you do not know what the purpose can be, and her immediate behaviour does not clear things up for you. You must watch patiently if you wish to discover what she intends doing. When she has found a suitable spot, she does a very peculiar thing. She comes to rest on her fore-feet and lifts three-quarters of the hinder part of her body into the air, and she remains stationary in this position, as still as if she were merely the statue of a termite. If you become impatient and walk away the secret of the flying termite will remain a secret to you for ever. What is she doing? She is busy sending a wireless S.O.S. into the air. Be patient a little longer – there are only very few people who have witnessed this miracle. What does the signal consist of?
Female termites after shedding their wings.
I think I know, but I doubt if you will guess what it is. Only if you have made a study of the signals of insects will you find the clue. You think, of course, of some sound which cannot be heard by the human ear. You may know how our little South African toktokkie* beetle knocks in similar circumstances. No, the termite’s signal is not a sound. One can prove that by experiment. We will content ourselves for the moment with the fact that the signal consists of something far and away beyond our own senses, and yet the male becomes aware of it over incredible distances! How does this happen? Well, it does happen, and our female is a very modern young woman, not too shy to make the first move in love-making. If you wait long enough you will presently see another termite come flying through the air, and you will notice that although his flight appears awkward and almost involuntary, yet he can steer a course and choose a direction even against the wind. The male sinks to the ground sometimes a yard or two from the place where the female is standing motionless in her curious posture. As soon as he lands he makes the same lightening-like movement which we have already seen in the
