As to the stringing, it is knack rather than strength.

See here," and taking the bow, which was just his own height, he placed his knee against it, bent it and slipped the string into the notch, with ease.

Then holding it at arms length, he drew it till the string touched his ear.
"It is a great deal stiffer than that I made before, Bathalda; and is about the strength of those we use at home.

Now for the arrows." These had been made by another set of men, and were an inch or two over a yard in length, with copper tips.
While he was examining them Cacama had taken up the bow, but though a strong and vigorous man for his race, he could bend it but a very short distance.
"It is a wonderful weapon," he said, "and I should not have thought that mortal man, whatever his color, could have used it.

Now, let us go down into the practice yard.
"Cuitcatl, do you fetch the queen and her ladies, to look on." "I am no great marksman, Prince," Roger said.