20 



105. QUASSIA AMARA, L. (Surinam Quassia.) 



a. Leaves and branchlets, preserved wet. Presented by 



Professor Bentley. 

 I. Wood. 



Note. The wood of this tree was formerly imported as Qnassia, which 

 is now derived from Picrsena excelsa. Pharmacographia, p. 119. For 

 micr. section of wood, see Berg, Anat. Atlas, taf. 26, fig. 62. For fig. 

 of bark, see Goebel und Kunze, pt. i., taf. xxxi., ff. 3-6. 



106. SAMADERA INDICA, Gaertn. (Karinghota, S. W. India, Samadera- 



gass, Ceylon.) 



a. Bark. 



Note. The bark is remarkable for its intense bitterness, and for 

 containing a bitter principle which gives a violet-red coloration with 

 concentrated sulphuric acid. See P. J. [3], vol. v., pp. 541, 644, 654. 

 The kernels of the fruit contain more of the bitter principle than the bark. 



107. SIMARUBA AMARA, Aubl. (Mountain Damson.) 



a. Root bark. 

 J. Ditto. Fine specimen. 



Note. Official in the secondary list of the United States Pharmacopoeia. 

 It possesses similar properties to those of Quassia. For microscopic 

 structure of bark, see P. J. [3] , vol. iii., p. 824 ; and Berg, Anat. Atlas, 

 taf. 38. For fig. of plant, see Bentley and Trimen, Med. Plants, tab. 56. 



108. SIMABA CEDRON, Planchon. 



a. Seeds. Cedron seeds. 



Note. Used in South America for intermittent fevers, in rheumatism, 

 and as an antidote to poison. See P. <7. [1] , vol. x., pp. 344, 560, and 

 for fig. of fruit, p. 347 ; [1] , vol. xi., p. 280 ; [1] , vol. xii., p. 63 ; [3] , 

 vol. iii., p. 801. 



ZYGOPHYLLACE^E. 



109. GUAIACUM OFFICINALE, L. 



a. Section of stem. (Lignum Vitce.) 

 I. Ditto, polished. 



c. Ditto, from the Bahamas. 



d. Shavings of the wood. Two specimens. 



Note. Guaiacum shavings are sometimes adulterated with shavings 

 of boxwood. This admixture may be detected by nitric acid, chloride 

 of lime, or other oxidizing agents, which will colour Guaiacum wood 

 greenish blue, but not boxwood. See P. J. [1] , vol. xii., p. 450. 



e. Resin. " Gum guaiacum." 

 /. Ditto, " Tears." 



g. Ditto, ditto, agglutinated. 

 h. Ditto, impure. 



Note. The Guaiacum in tears is supposed to be the produce of 

 G. sanctum, L. For micr. section of wood, see Berg, Anat. Atlas, taf. 27. 

 For constitution of resin see P. J. [1], vol. xi., p. 523 ; and [1], vol. i., 

 272, [2], vol. iii., p. 483, for products of decomposition of the resin ; 

 also see Guaiacol. For fig. of plant, see Bentley and Trimen, Med. Plants. 

 tab. 41. 



