From his arrival, Cuéllar began collecting scientific materials to send back to Spain. The first specimens sent back were natural products of the Philippines, including seashells, seeds, resins, woods, drawings, minerals, and some living plants.
From his arrival, Cuéllar started gathering scientific materials for Spain. The initial shipments included natural products from the Philippines, such as seashells, seeds, resins, woods, drawings, minerals, and some living plants.