REPORT OF NATIONAL MUSEUM, 1914. (5 
clavichords and pianos are played by means of a keyboard. The 
highest development of stringed instruments is shown in the stopped 
class, whose arrangement admits of shades of expression. The fourth 
and last division, covering vibrating columns or currents of air,. is 
subdivided, according to the method by which the air is set in vibra- 
tion, into flutes, whistles, etc.; horns, simple, with finger holes, keys 
or slides; and reeds which are single or double, and further distin- 
guished as beating reeds, free reeds, ribbon reeds, and inverted double 
reeds. 
This classification is simple and easily grasped by the visitor, and 
it will be seen that instruments which are preferred by both civilized 
and uncivilized peoples may be grouped together and the different 
materials and styles of art form an interesting picture. Upon no 
other possession of man has there been a greater effort to render 
grateful to the sight objects designed for another purpose. Es- 
pecially worthy of note is an old English pipe organ which was 
brought to the Virginia colony in 1700 for the Episcopal Church at 
Port Royal, and later placed in Christ Church, Alexandria, where 
it is thought to have been in use when Washington was an attendant. 
It was subsequently taken to Shepardstown and thence to St. Thomas 
Church at Hancock, Md., where it remained until 1906, when it 
was presented to the Museum by the vestry. 
