Among the Moï the sorcerers alone know the secret processes which are employed in the manufacture of two extremely powerful cardiac poisons, antiarin and strophanthin, though these are also in use among the Dyaks of Borneo. No one else is allowed to be present when their preparation is taking place, but fortunately one of my compatriots in the mission, M. Odera, who was in the Woods and Forests Departments and had thirty elephants killed or captured to his credit, was once honoured by an invitation to be present at the ceremony.

A moonlight night is chosen. The novice first invokes the genii of the forest and then cuts a portion of the creeper strophantus giganteus, strips off the bark, grinds it up in a mortar and boils it over a fire until it attains the consistency of gum. This operation takes place at a great distance from the village, for the fumes are supposed to be noxious. To ascertain whether the required strength has been attained they cut off part of a lizard's tail and put a drop of the concoction on the severed end. Death ought to be immediate.

The second poison is obtained from the antiaris toxicaria without any special preparation. An incision is made in the bark of the tree. In some regions the arrows are poisoned by the simple expedient of sticking them into the trunk of the poison-bearing tree and leaving them in this novel pincushion until required.

It is a curious fact that game killed by poisoned arrows is perfectly wholesome if the wound is carefully washed at once. The young plants also of the antiaris toxicaria supply an absorbent poison. Their sap is not as powerful as that of the full-grown trees, but on the other hand has neither its bitterness nor repulsive smell.

Both the strophantus giganteus and the antiaris are found all over the Indo-Chinese and Malay peninsulas. The effect of antiaris is the same whether introduced into the digestive organs or applied to the cellular tissue, but in the former case the dose must be considerably stronger to produce the same result. It is pleasant to record that there is little data on which to base observations on the effect of the Moï poisons on human beings. Our own experience furnished one or two illustrations, however. While we were in Nhe-An, a province of Annam, one of our captains was wounded by two arrows and, though they were taken out at once, he died twenty-two days later in fearful agony. Another officer was struck by a poisoned missile and after a few minutes went mad and committed suicide. The danger of attack by the rebellious Moï was always present to our minds during the expedition. Two officers, MM. Canivey and Barbu, were wounded by several arrows. As there was no post where medical assistance could be obtained within several days' march and no doctor among us, I undertook a rational cure. All the symptoms pointed to poison. The nervous tremours, the alternating phases of excitement and lethargy, the dilation of the pupil, the feeble voice and the subnormal temperature left no doubt as to the nature of the malady. For a long time it seemed that recovery was impossible, for the arrow heads had not been immediately extracted; but events took a happier turn and in four weeks they were both well again. I can only conclude that the poison cannot have been fresh and consequently had lost much of its strength. The natives treat a patient for poison by first making the wound bleed, then washing it in water impregnated with sea salt and calcined alum, and finally inducing a heavy perspiration by making him drink an infusion of mulberry leaves.

Most of the Moï arm themselves with the cross-bow, which is a deadly weapon at a range of not more than forty yards. At half that distance the arrow will easily penetrate through two inches of the hardest wood. The arrow head is made of iron or wood, around which is wound a thread impregnated with the poisonous substance. It is fashioned with a notch at the base to make its extraction from a wound difficult, if not impossible.

The manipulation of the cross-bow requires no little strength. The bowman props the cross against his body and holds the bow firm on the ground with his foot. The strain of fixing the arrow is so great that it has been known to burst the bladder.

When the Moï goes to war with his neighbours he generally swathes his body in a multitude of thick wrappings to give him protection against such weapons as knives and daggers. His shield is of stout cane or buffalo hide and usually ornamented with the insignia of his tribe. Finally his panoply is completed by a spear with a handle of mahogany or sometimes by a two-handed sword. He is also ingenious at constructing subsidiary defences. On the outbreak of hostilities the neighbourhood of a village is thickly studded with small bamboo javelins, which are extremely difficult to distinguish from the grass and brushwood. Some of our party received grievous wounds from these concealed weapons.

The forests we encountered during our topographical survey are the home of a certain kind of buffalo of immense size. This species, which is very rare and not found elsewhere, is no other than the Aurochs, which are called "Con-minh" by the Annamites and "Co-bay" by the Moï. These animals are bay in colour and have a short and scanty coat, with the longest hairs under the belly and at the throat. They have white spots on all four feet, and resemble the wild buffalo in not being dewlapped. They are formidable foes and never wait to be attacked, but charge with lowered head at a prodigious speed. The tiger seems to have no terrors for them and many are the stories of their triumphs over the king of the forest himself.