112 
113 
114 
115 
116 
(on) 
starts with a pure form of cellulose,—in this case paper,—preferably made 
from cotton fiber. Presented by E. Dupont de Nemours & Co., Wilmington, 
Delaware. 
Shredded paper, ready for nitrating. 
The nitrated paper. 
Sublimed camphor, or Flowers of Camphor, added in the manufacturing pro- 
cess. 
Pyralin as it comes from the mixing machine. 
The preceding as it comes from the rolls. 
117-120. Ivory sheeting of different colors. 
121-122. The same, in transparent form. 
123-126. Ivory rolls of various colors. 
127 
128 
129. 
130 
131 
132 
133 
134 
135 
136 
136 
138. 
139. 
140. 
141. 
142. 
143. 
144. 
An ivory tube. 
A mirror blank.—A piece of ivory sheeting cut into form for a mirror frame. 
The finished mirror frame. 
Bored brush blank.—A piece of ivory sheeting cut into form for a brush and 
bored to receive the bristles. 
The completed brush. 
Ivory comb blank.—A piece of ivory sheeting cut into form for combs. 
The same cut to form two combs. 
The finished ivory comb. 
In many cases the plant hairs which envelop the seeds do not grow from 
the seeds themselves, but from the inside of the pod, as in the following. 
Pachote tree.—A leafy and fruiting branch of Ceiba, probably C. pallida Rose 
(Bombacaceae—Bombax Family). Native of tropical regions. Collected 
by H. H. Rusby, at Empalma de Gonzales, Mexico, in 1910. 
Pachote pods.—The fruits of C. pentandra Gaertn. Collected by H. H. 
Rusby in Mexico, in 1910. 
-I. The fiber of the same removed from the pods. From Jalisco, Mexico. 
137. 
The fruits of the above species, grown in the Philippines and presented by 
E. B. Southwick. 
Another Philippine sample presented by Theodore Miller. 
A commercial sample of the same from the New York market. Presented 
by H. H. Rusby. 
Pachote fiber—The hairs removed from the pods and ready for stuffing 
pillows and mattresses. 
Baina Ceiba Barraguda.—The hairs of the same or a closely related plant. 
From the Field Museum of Natural History. 
Guano.—The plant hairs of a species of Ochroma, the Corkwood tree, Balsa- 
tree or Raft-tree, attached to the inner portions of their pods. (Same 
family.) Native of tropical America. Specimen collected by Mr. and Mrs. 
A. A. Heller in Porto Rico. 
The same, removed from the pods and ready for use in stuffing pillows and 
mattresses. 
Milk-weed, or silk-weed, hairs—The hairs of Asclepias syriaca L. attached 
to their seeds and contained in their pods. (Asclepiadaceae—Milk-weed 
Family.) Native of the United States. These hairs have been used for 
weaving into fabrics, but only experimentally. The fabric has a very 
