Guano: A Treatise of Practical Information for Farmers

A practical manual details the composition, procurement, and application of Peruvian guano as a concentrated fertilizer suited to many American crops. It presents chemical analyses, identifies adulterated samples, and gives specific recommendations for quantities and modes of application on different soils. The author assembles experiments and farmer reports from multiple states to document effects on wheat, corn, clover, and exhausted or sandy lands. Economic issues of cost, transportation, durability of results, and comparisons with stable and compost manures are evaluated. Historical and logistical discussion covers island sources, methods of extraction, available supply, and market pricing.