The main channels of the canal were to be 26 feet wide at the base and 40 feet wide at the water line (see Diagram 1). The water depth was to be four feet. Horses and mules provided the power for the canal boats.
The definition of a quarry is a place, often a deep hole in the ground, from where stones are extracted. An example of a quarry is a deep hole from where granite is mined.
A glossary is a dictionary of terms specific to a certain subject. A biology textbook might have a glossary in the back, so you can quickly look up all those technical words. Many fields of study use terms that are pretty much restricted to that field of study, so authors often supply a glossary to help people understand what they're talking about. The glossary is often found at the end of a book or article and is usually in alphabetical order.