496 



MEMOIR OF DANIEL 



\DWELL 



1 8 2 2 



182 5 



1825, 

 1827 



1 83 5 

 1837 



1 838 



1 12 



1845 

 1 855 

 1856 



1860 

 1861 



1861 

 1863 



1861 



1866 



1868 



List of Professor Treadwell's Papers. 



Improvements in Machinery. North American Review, Vol. XIV. p. 14. 



An Account of the Passage of Water through an Aqueduct being totally obstructed by a Col- 

 lection of Air. Boston Journal of Philosophy and Arts, Vol. II. 



Report on the Supply of Boston with Pure Water. 



On a Mode of conducting the Transportation on Railways, and Arranging the Passing Places, 



to avoid the Necessity of a Double Set of Tracks. " Franklin Journal," Vol. IV. p. 278. 

 Paper dated August 22, 1827. 



1828. Report to S. C. Phillips, Benjamin Hawkes, and Perley Putnam, Committee of the Directors of 



the Salem Milldam Corporation, April 29, 1828. , 



1829. Reports to the Directors of the Massachusetts Railroad Association on a Single Track. 



1833. Description of a Machine called a " Gypsey," for Spinning Hemp and Flax. Memoirs of the 



American Academy, 1883. 



Report on the Weights and Measures of the State of Massachusetts. 



Report as Chairman of the Commission on the Supply of Boston with Pure Water, 



lJe port as Chairman of same Commission on the same Subject. 



Review : " Practical Treatise on Ventilation, by Dr. Morrill "Wyman." North American Review, 



Vol. LXIil. 

 A Short Account of an Improved Cannon. 



Relations of Science to the Useful Arts. Delivered to the American Academy, November, 1852. 

 On the Practicability of the Construction of Cannon of great Calibre, capable of enduring long 



continued Use under full Charges. 



On the Construction of Rifled Cannon. A Letter to Hon. John B. Floyd, Secretary of War. 

 Ou Hie Construction of Improved Ordnance, as proposed in a Letter to the Secretaries of the 

 War and of the Navy, and the Chiefs of the Bureaus of Engineers and of Ordnance of the 



United States. 

 On the Measure of the Forces of Bodies moving with different Velocities. 

 On the Effect of Cannon Shot upon Iron-clad Ships and Armor Plates generally. Proceedings of 



American Academy, May, 1863. 

 On the Construction of Hooped Cannon ; being a Sequel to the Memoir on the Practicability of 



the Construction of Cannon of great Calibre, etc. Memoirs of the Academy, Vol. VL, 1864. 

 On the Comparative Strength of Cannon of Modern Construction. Proceedings of the Academy, 



Vol. VIL, 1866. 

 Answer to Charges contained in an Article in the " Scientific American/' October, 1867. 



A notice of Professor Treadwell's Papers, by the compiler of this Memoir, was printed in the Atlantic 



A^KK t V,f ^Vk^ m 1 Q"' A T ^ 1 "V "V "V* IT a r* n 



Monthly, October, 1873, Vol. XXXII. p. 470. 



List of Inventions. 



» 



Wood 



Wrought-Nail Machine. 



Foot Lever Printing Press. 



Power Printing Press. 



Injecting Timber with Preserving Fluids. 



Circular Hatchel, or ; - Lapper." 



Belted Roving Machine. 



Iron Tail for Laying Rope. 



Machinery for making Cannon and forming Hoops 



for Cannon. 

 Recoil Apparatus. 

 Device for Firing Cannon. 

 Tubular Condenser for Steam Engines. 

 Hot- Air Furnace Regulator. 



"Gypsey."— Machine for Spinning Hemp or Flax. Improved Backsight of variable Size for Rifles. 

 Apparatus for Tarring Rope-varns. 





