Pg 79, 'gravity made made him' replaced by 'gravity made him'. Pg 157, 'if non elastic' replaced by 'if non-elastic'. Pg 264, 'the divergency when' replaced by 'the divergence when'. Pg 297, '283. Electricity' replaced by '383. Electricity'. Pg 321, the Questions begin with number '13' and has not been changed. Pg 331, the number '174' is used twice and has not been changed. Pg 335, 'with phosporus' replaced by 'with phosphorus'. End of the Project Gutenberg EBook of Science for the School and Family, Part I. Natural Philosophy, by Worthington Hooker