ex 
5124. 
5125. 
5126. 
Gi27, 
5128. 
5129. 
5130. 
5131. 
Sige 
5133. 
5134. 
5135. 
5136. 
5137- 
5138. 
5139. 
5140. 
(230) 
Black walnut bark.—The bark of Juglans nigra L. (See No. 4088.) Pre- 
sented by Parke, Davis & Company, of New York. 
Sweet birch bark.—The bark of Betula lenta L. (See No. 1804.) Collected 
by P. Wilson in Bedford Park, New York, January, 1899. 
A commercial sample of the same. Presented by Parke, Davis & Company, 
of New York. 
White birch bark.—The bark of B. populifolia Marsh. Native of eastern 
North America. Collected by P. Wilson in Bedford Park, New York, 
July, 1899. 
European white birch. Shira keba.—The bark of B. alba L. Native of 
northern Europe and Asia. From Japan, through the Field Museum of 
Natural History. 
Yellow birch bark.—The bark of B. lutea Michx. Native of eastern and 
central North America. Collected by H. H. Rusby at Marlboro, New 
Hampshire, July, 1919. 
Alder bark. 'Tag-alder—The bark of Alnus rugosa (Du Roi) Koch (Same 
family). Native of eastern North America. Collected by P. Wilson in 
Bedford Park, New York, June 26, 1899. 
White oak bark.—The bark of Quercus alba L. (Fagaceae—Oak Family). 
Native of eastern and central North America. Collected by P. Wilson at 
Bronxville, New York, July 11, 1899. 
Rock oak. Chestnut oak bark. Mountainoak. (See No. 1338.) Collected 
by H. H. Rusby at Montclair Heights, New Jersey, July, 1919. 
European oak bark.—The bark of Q. Robur L. Native of Europe. Presented 
by Merck & Company, of New York. 
Elm bark. Slippery elm. Ulmus.—The inner bark of Ulmus fuloa Michx. 
(Ulmaceae—Elm Family). Native of North America. Presented by 
Parke, Davis & Company, of New York. 
Osage orange. Bow-wood.—The bark of Toxylon pomiferum Raf. (Mora- 
ceae—Mulberry Family). Native of the central United States and culti- 
vated for hedges. Collected by P. Wilson in Bedford Park, New York, 
June, 1899. 
Tataybe bark.—The bark of Maclura MoraGriseb. (Same family). Native 
of tropical America. From Paraguay, through the Field Museum of 
Natural History. 
Hackberry bark.—The bark of Celtis occidentalis L. (Samefamily). Native 
of North America, Collected by H. H. Rusby at Upper Montclair, 
New Jersey, October 10, 1919. 
Barberry root bark. Cortex radicis berberis.—The bark of the root of Berberis 
vulgaris L. (See No. 2541.) From the New York College of Pharmacy. 
Another sample of the same. 
Barberry stem bark.—The bark of the trunk of the same plant. Presented 
by Lehn & Fink, of New York. 
Tulip-tree bark. White-wood. Liriodendron.—The bark of Liriodendron 
tulipifera L. (Magnoliaceae—Magnolia Family). Native of China and 
of the eastern and central United States. Collected by P. Wilson in 
Bedford Park, New York, June, 1899. 
