These loose hints I have thrown together, in order to excite the curiosity of philosophers, and beget a suspicion at least, if not a full persuasion, that this subject is very copious,.
A copious amount of something is a large amount of it. I went out for a meal last night and drank copious amounts of red wine He attended his lectures and took copious notes. = abundant + copiously co·pi·ous·ly The victims were bleeding copiously. existing or being produced in large quantities (copiosus, from copia , from co- ( CO-) + ops )
large in number or quantity (especially of discourse); "she took copious notes"; "extensive press coverage"; "a subject of voluminous legislation"