Rollin Gregg (1828-1886) was a Homeopath working in Buffalo, New York. This book was first printed in 1879 and is regarded as unique to homeopathic literature. It is concerned solely with pains of the chest, sides and back and lists remedies in alphabetical order describing the specific areas and sensations. He has included descriptive plates that show arrows in specific areas of the body and the remedy that relate to that specific pain. A fascinating book.