
GRADUATES CLASS OF 1905 Iol 

He was born and reared on a farm near Ottumwa, Iowa, attended the 
country school and in 1893 entered the high school in the small town of 
Agency in the same county. He was graduated in 1897 and entered 
Iowa State College, Ames, Iowa, where he received the degree of 
Bachelor of Agriculture in 1900. 
He was married June 28, 1910, in Ottumwa, Iowa, to Miss Mary 
Ethelda Morrison, Iowa State College ’o2, of Seattle, Wash., daughter 
of John R. Morrison and Mary Coffeen Morrison. 
Mast entered the United States Forest Service upon his 
graduation from Iowa State College in 1900. His first position 
as a forest assistant was in charge of Halsey Nursery in con- 
nection with the Nebraska National Forest, and he was super- 
visor of this forest from 1908 to 1910. In 1910 he was in the 
office of planting in Denver; 1910-11, in charge of Monument 
Nursery, Pike National Forest, and in 1911-12, forest assistant 
and acting supervisor of Gunnison National Forest. With 
W. J. Duppert he has recently taken over the operation of the 
Davenport (Iowa) Nursery, formerly owned by Nichols & 
Lorton. 
He writes: “I have developed the systems for nursery and 
planting work as practiced on the Nebraska and Kansas, and 
to some extent, on the Pike National Forest. This has included 
work with methods of seeding, mulching, shading, watering, 
storing, transplanting, digging, packing and planting. In most 
cases old systems have been modified or, in a number of cases, 
new ones instituted. Have devised the Mast Transplanting 
Tools, which are now being patented, also the Mast Forest 
Trencher. 
“During 1909, 1910 and 1911, I was a special lecturer of the 
department of forestry, Nebraska University, covering the sub- 
jects of ‘nursery’ and ‘planting’ work, and in 1912, a special 
lecturer at the summer school of the Colorado State Normal 
School. 
“Have done extensive work in seed collecting, having gath- 
ered coniferous seed in Minnesota, Nebraska, Colorado, New 
Mexico and Idaho. Have prepared a circular (as yet unpub- 
lished) for the Forest Service on the subject of ‘Collecting Seed 
of Rocky Mountain Conifers.’ Was the first in the Forest 
Service to make use of a churn or slatted box shaker to remove 
seed from cones.” 
