COMMITTEES ON BEHALF OF THE GOVERNMENT 205 



1886 and 1887. On the Morphine Content of Opium (p. 309). 



1887. On Quartz Plates used in Saccharimeters for Sugar Determi- 

 nations (p. 308). 



1890. To Formulate a Plan for a Systematic Search for the North 

 Magnetic Pole (p. 311). 



5. Committees appointed at the request of the Navy Depart- 



ment. 



1863. On Protecting the Bottoms of Iron Vessels (p. 213). 



1863. On Magnetic Deviation in Iron Ships (p. 215). 



1863. On Wind and Current Charts and Sailing Directions (p. 219). 



1864. On the Explosion on the United States Steamer Chenango 



(p. 230). 

 1864. On Experiments on the Expansion of Steam (p. 226). 

 1877. On Proposed Changes in the American Ephemeris (p. 267). 

 1881. On the Transit of Venus (p. 256). 

 1885. On the Astronomical Day, the Solar Eclipse of 1886, and the 



Erection of a New Naval Observatory (p. 303). 



6. Committees appointed at the request of the War Department. 



1864. On the Question of Tests for the Purity of Whiskey (p. 225). 



1866. On the Preservation of Paint on Army Knapsacks. (No report.) 



1867. On Galvanic Action from Association of Zinc and Iron (p. 232). 

 1873. On the Exploration of the Yellowstone. (No report.) 



1881. On Questions of Meteorological Science and Its Applications 

 (p. 290). 



7. Committees appointed at the request of the Department of 



State. 



1866. On the Improvement of Greytown Harbor, Nicaragua (p. 247). 

 1903. On the Restoration of the Declaration of Independence (p. 279). 



8. Committees appointed at the request of the Department of 



Agriculture. 



1870. On Silk Culture in the United States (p. 331). 

 1 88 1. On Sorghum Sugar (p. 284). 



9. Cornmittees appointed at the request of the Department of 



the Interior. 



1880. On the Restoration of the Declaration of Independence (p. 279). 

 1896. On the Inauguration of a Rational Forest Policy for the Forested 

 Lands of the United States (p. 314). 



IS 



