"I trod upon one, and he heaved up, and that made me jump into a soft place, and--ugh! what's that ?" I was very doubtful about Jack's crocodile, but there was no mistake about the object that had made him utter this last cry of disgust.
"They're pricking me horrid," he shouted; and we found that he had at least twenty large leeches busily at work banquetting upon his blood.
The blacks set to work picking them off, and scraping him clear of the thick vegetable mud that adhered to him; and with the promise that he was to have a good bathe in the first clear water we encountered, we once more started, Jack looking anything but cheerful, but stubbornly protesting that it was wonderful how comfortable his wet clothes made him feel.
Master Jack had to listen to a lecture from the doctor, in which the latter pointed out that if success was to attend our expedition, it would not do for the various members to be darting off at their good pleasure in search of butterflies, and at first Jack looked very grim, and frowned as if about to resent it all.

To my surprise, however, he replied: "I see, doctor; we must be like soldiers and mind the captain.

Well, all right.

I won't do so any more." "I'm sure you will not," said the doctor, holding out his hand.

"You see we must have discipline in our little corps, so as to be able fully to confide in each other in cases of emergency.