""A History Of The Progress On The Calculus Of Variations: During The Nineteenth Century"" is a book written by Isaac Todhunter and published in 1861. The book provides a comprehensive overview of the development of the calculus of variations during the 19th century. It discusses the major contributions made by mathematicians such as Lagrange, Euler, and Weierstrass, and how their work helped shape the field. The book also explores the application of the calculus of variations to various fields such as physics, engineering, and economics. It is a valuable resource for anyone interested in the history and development of mathematics and its applications.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.