Text: the brain hears through the ears. this human spirit cannot think. the brain thinks although the spirit imparts the power to think, whereas brute animal brains without such spirit cannot, except in the most elementary manner.

Correct capitalization: The brain hears through the ears. This human spirit cannot think. The brain thinks although the spirit imparts the power to think, whereas brute animal brains without such spirit cannot, except in the most elementary manner.

Text: in a joint assembly, which had decisive power, should preside equal number of members from each of these two parts of the monarchy.

Correct capitalization: In a joint assembly, which had decisive power, should preside equal number of members from each of these two parts of the monarchy.

Text: duration: an hour to an hour and a half; longer lectures require a break or the introduction of engaging activities (hands-on sessions, group work or discussions).

Correct capitalization: Duration: An hour to an hour and a half; longer lectures require a break or the introduction of engaging activities (hands-on sessions, group work or discussions).

Text: for instance, i make one persons answerable for my stock.

Correct capitalization:
For instance, I make one persons answerable for my stock.