Read this extract from The Sign of the Four then answer questions 7-10 below.
'The aborigines of the Andaman Islands may perhaps claim the distinction of being the smallest race upon this earth, though some anthropologists prefer the Bushmen of Africa, the Digger Indians of America, and the Terra del Fuegians. The average height is rather below four feet, although many full-grown adults may be found who are very much smaller than this. They are a fierce, morose, and intractable people, though capable of forming most devoted friendships when their confidence has once been gained.' Mark that, Watson. Now, then, listen to this. 'They are naturally hideous, having large, misshapen heads, small, fierce eyes, and distorted features. Their feet and hands, however, are remarkably small. So intractable and fierce are they that all the efforts of the British official have failed to win them over in any degree. They have always been a terror to shipwrecked crews, braining the survivors with their stone-headed clubs, or shooting them with their poisoned arrows. These massacres are invariably concluded by a cannibal feast.' Nice, amiable people, Watson!'
What impression are we given of the Andaman Island aborigines?