Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Environmental Systems Engineering and Economics emphasizes the application of optimization, economics, and systems engineering to problems in environmental resources management. This senior level/graduate textbook introduces optimization theory and algorithms that have been successful in resolving water quality and groundwater management problems. Both linear programming and nonlinear optimization are presented. Multiobjective optimization and the linked simulation-optimization (LSO) methodology are also introduced. The basic principles of economics and engineering economics are also discussed to provide a framework for economic decision making. This text contains numerous example problems. Case studies are presented that address water resources management issues in the north China plain, the control of saltwater intrusion in Jakarta, Indonesia, and groundwater resources management in the Yun Lin basin, Taiwan.

Professor of natural and experimental philosophy at the University of Cambridge, Robert Willis (1800-75) mostly lectured on mechanism, and was elected an honorary member of the Institution of Civil Engineers in 1838. But Willis's interests also included Italian Gothic architecture, and his observations on the style, amassed in 1832-3 while travelling in France, Italy and Germany, were presented in this book, first published in 1835. The work is a pioneering study of Italian Gothic, a mode overlooked by his contemporaries, and key examples are brought together. It places Italian Gothic architecture within a European context and argues that the style represents an evolutionary assemblage of architectural motifs from different places and earlier periods. Willis's narrative refocused attention on Italian Gothic, winning the approval of the Institution of British Architects, which made him an honorary member in the year of its publication.

Canterbury Cathedral, at the heart of the Church in England since the arrival of Augustine in Kent in 597 C.E., is remarkable for its extent, beauty and importance, for the variety of its architectural styles and the many structural changes which it has undergone over the years. In this 1845 work, the Reverend Robert Willis, who was Jacksonian Professor of the University of Cambridge, reproduces historical accounts of the destruction and rebuilding of the cathedral, for example by the monk and chronicler Gervase of Canterbury on the disastrous fire in 1174. He connects these sources to his own informed opinions and interpretations of the historical documents, and includes many illustrative wood engravings to aid the discussion. The modern reader will obtain a great insight into the motives that dictated such changes of plan and structure of this incredible building.