249 



reasons no comparative observations were attempted in this con- 

 nection. The use of very large volmiies of extract, to reduce the 

 comparative effects of the variations referred to, was impracticable. 



The general question of the physiology or chemistry of pigment- 

 formation in the heart-wood was not approached at all, nor were 

 the histological characters of the varieties compared. 



There can be no doubt that " bastard" logwood is, as Prof. 

 Earle also concludes (see page 368) a distinct variety or subspecies 

 of Hacmatoxylon campechiamim, notwithstanding the slight mor- 

 phological differences that distinguish it from the " red logwood" 

 and " blue logwood." The differences in the floral organs between 



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Figure 2 These drawings, which were made from specimens collected by 

 Mr. William Fawcett, near M. rant Bay, Jamaica, show all the morphological 

 differences that have been observed in the flowers of three varieties : a " blue log- 

 wood." h, "red logwood," c, "bastard logwood." 



The petals are widest in the blue and narrowest in the bastard. 



The pistil of the blue is thicker than that in the red and the bastard. The 

 style in the bastard is slightly curved. 



In the bastard the stamens are smaller than in the others, and there is less 

 difi'erence between them. 



It does not appear from the data at hand that the differences noted exceed the 

 ordinary individual variations for the species of Haeniatoxylon. 



