TABLE OF CONTENTS. xi 



PAGE 



SECTION LXXVI. THE DISPOSAL OF SEWAGE ON THE FARM 452 



By Prof. J. B. Davidson, Department of Agricultural Engi- 

 neering, Iowa State College. 



SECTION LXXVII. EARTH ROADS ... . 455 



By Prof. J. B. Davidson, Department of Agricultural Engi- 

 neering, Iowa State College. 



SECTION LXXVIII. THE COUNTRY HOME 460 



By J. E. Halligan, Chemist in Charge, Louisiana State Ex- 

 periment Station. 



SECTION LXXIX. TRUCK GARDENING 464 



By Prof. G. L. Tiebout, Department of Horticulture, 

 Louisiana State University. 



APPENDIX 475 



INDEX 485 



