of watches, which includes the gold watch which belonged to 
Admiral Nelson the hero of Trafalgar. One of the most at- 
tractive and valuable of the collections in this section is that 
recently presented by Mr. and Mrs. Herbert DuPuy, which 
besides a wonderfully extensive series of miniatures, is rich in 
enameled, inlaid, and carved boxes made of the precious 
metals. 
Historical collections are preserved either in the library of 
the museum or on the third floor. Among the interesting his- 
torical objects is the skeleton of the horse upon which ““Stone- 
wall” Jackson was seated the night he was killed at Chancel- 
lorsville, a number of the cannon surrendered by General 
Burgoyne to General Gates at the battle of Saratoga, and the 
collections belonging to the Pittsburgh Chapter of the 
Daughters of the American Revolution. 
The library of the museum is on the first floor. It con- 
tains the extensive private library of scientific works deposit- 
ed by Dr. W. J. Holland, as well as the many thousands of 
volumes collected by the museum. 
The museum publishes a series of octavo volumes known 
as the “Annals,” and a series of quarto volumes known as the 
“Memoirs,” besides annual reports and other occasional 
publications. The director emeritus of the museum is the ed- 
itor of these publications. 
From its inception the museum has carried on intensive 
studies in various fields and has been one of the leaders of re- 
search in America, especially in zoology, botany, and paleon- 
tology. The museum has either sent out or assisted in send- 
ing out many expeditions to various parts of the globe. A 
recent expedition from the museum traversed the interior of 
the peninsula of Labrador from south to north, the first time 
this feat was accomplished by white men. The results of the 
researches are in part embodied in the “Annals” and “Me- 
moirs”’ of the museum. 
Classes from the eighth grade of the public schools of Pitts- 
burgh and schools of Allegheny county visit the museum 
every day of the fiscal year. They are given instruction in 
natural history by members of the museum staff detailed for 
that purpose. In addition to these, annually, hundreds of