"How many teeth has a rabbit?" the tall man asked suddenly.
"I don't know," the student answered with candour.
The two looked triumphantly at one another.
"He doesn't know!" cried the goggle-eyed one decisively.
"I should recommend you to count them the next time you have one for dinner," the other remarked. As this was evidently meant for a joke, Tom had the tact to laugh, and a very gruesome and awe-inspiring laugh it was too.
Then the candidate was badgered about the pterodactyl, and concerning the difference in anatomy between a bat and a bird, and about the lamprey, and the cartilaginous fishes, and the amphioxus. All these questions he answered more or less to the satisfaction of the examiners--generally less. When at last the little bell tinkled which was the sign for candidates to move on to other tables, the taller man leaned over a list in front of him and marked down upon it the following hieroglyphic:--
"S. B.--."
This Tom's sharp eye at once detected, and he departed well pleased, for he knew that the "S. B." meant _satis bene_, and as to the minus sign after it, it mattered little to him whether he had done rather more than well or rather less. He had passed in zoology, and that was all which concerned him at present.
CHAPTER IX.
A NASTY CROPPER.
But there were pitfalls ahead. As he moved to the botany table a grey-bearded examiner waved his hand in the direction of the row of microscopes as an intimation that the student was to look through them and pronounce upon what he saw. Tom seemed to compress his whole soul into his one eye as he glared hopelessly through the tube at what appeared to him to resemble nothing so much as a sheet of ice with the marks of skates upon it.
"Come along, come along!" the examiner growled impatiently. Courtesy is conspicuous by its absence in most of the Edinburgh examinations. "You must pass on to the next one, unless you can offer an opinion."
This venerable teacher of botany, though naturally a kind-hearted man, was well known as one of the most malignant species of examiners, one of the school which considers such an ordeal in the light of a trial of strength between their pupils and themselves. In his eyes the candidate was endeavouring to pass, and his duty was to endeavour to prevent him, a result which, in a large proportion of cases, he successfully accomplished.
"Hurry on, hurry on!" he reiterated fussily.
"It's a section of a leaf," said the student.
"It's nothing of the sort," the examiner shouted exultantly. "You've made a bad mistake, sir; a very bad one, indeed. It's the spirilloe of a water plant. Move on to the next."
Tom, in much perturbation of mind, shuffled down the line and looked through the next brazen tube. "This is a preparation of stomata," he said, recognizing it from a print in his book on botany.
The professor shook his head despondingly. "You are right," he said; "pass on to the next."
The third preparation was as puzzling to the student as the first had been, and he was steeling himself to meet the inevitable when an unexpected circumstance turned the scale in his favour. It chanced that the other examiner, being somewhat less of a fossil than his _confreres_, and having still vitality enough to take an interest in things which were foreign to his subject, had recognized the student as being the young hero who had damaged himself in upholding the honour of his country. Being an ardent patriot himself his heart warmed towards Tom, and perceiving the imminent peril in which he stood he interfered in his behalf, and by a few leading questions got him on safer ground, and managed to keep him there until the little bell tinkled once more. The younger examiner showed remarkable tact in feeling his way, and keeping within the very limited area of the student's knowledge. He succeeded so well, however, that although his colleague shook his hoary head and intimated in other ways his poor opinion of the candidate's acquirements, he was forced to put down another "S.