of trees and shrubs,&quot; and to use &quot;lectures, pictures or tours ... to increase the interest and knowledge of such pupils in the fish and wild life, soil and water of the state.
(lectures, pictures or tours; to increase; the interest and knowledge of such pupils in the fish and wild life, soil and water of the state)
lectures, pictures or tours
to increase
the interest and knowledge of such pupils in the fish and wild life, soil and water of the state