Brigham.] 152 [November 18, 



Mr. R. C. Greenleaf showed a specimen of Amphipleicra pellucida, 

 mounted dry, on wbieli he clahned to show the markings, v^s this 

 has been one of the most difficult of the diatoms to resolve, and per- 

 haps the one about the resolving of which there has been the most 

 dispute, Mr. Greenleaf proposed leaving the matter open for further 

 examination and discussion. 



Dr. Rufus King Browne of New York, being present, spoke of the 

 difficulty of perfectly resolving the markings on this form; he con- 

 sidered the markings as granules or tubercles, which appear as lines 

 or puncta, according to the light thrown upon them, and that the 

 markings were not as fine or close as claimed by Microscopists. 



November 18, 1868. 

 The President in the chair. Twenty-five members present. 



After the reading of the Records, the President announced 

 the recent death, after an illness of short duration, of Mr. 

 Horace Mann, Curator of Botanv. 



The feeling of the Society Avas exjDressed by Mr. William 

 T, Brigham, -who spoke as follows : — 



It is sad to speak publicly of our private sorrows, but 

 when those sorrows touch all ahke who reverence the good, 

 admire the brave, rejoice over victories in the noble struggle 

 of light against darkness, knowledge against ignorance, or 

 who mourn over great efforts uncompleted, then mi;st Ave 

 lay aside all thoughts of 2icrsonal loss, and spe::k each with 

 all of our common grief. 



The youngest otiicer of this Society has left us never to 

 return. Were years alone the test of usefulness and man- 

 hood, we might count over the few that Horace Mann num- 

 bered in his earthly life, regret they Avei-e so fcAA', and from 

 the fp.ll-groAvn and ripened lives still Avith us, look for his 



