82 



Scientific Intelligent 



January, 1817. The first number probably ended on p. 96; the 

 second on p. 222. The third and fourth numbers were 

 before November 10, 1817. The fourth number must have in- 

 cluded p. 466; the fifth ami conciudim.r number of the volume (to 

 which the title-page assigns the date of 1821), must lie-in on or 

 before p. 529. For, on the latter page Nuttall's genus />,■„,„,„•- 

 pha occurs and his work is for the first time cited ; while the pref- 

 a ""'. v llM oi on p. 166, does aol contain Dia- 



morpna. 



This is confirmed by Elliott's correspondence with Zaccheus 

 Collins now in the possession of the Academy of Natural Sci- 

 ences, Philadelphia, which Mr. Ifedliehl has kindly consulted, at 

 my request ; from which it appears, in short, that No. 1 was first 

 issued September 26, 1816; No. 2, on or before February 19, 

 1817; No. 3, on or before April 3, 1817; No. 4 and No. 5, no 

 data found ; No. 6, the commencement of the second volume, ap- 

 peared on or before October 12, 1821. The title pao-e of this vol- 



• The collection referred to, and which contains a series of letters 

 of Muhlenberg, Elliott, liigeh.w, Torre v, and others, to Collins, 

 has been put into excellent condition for preservation by Mr. 

 John H. Redfield. A hasty perusal shows that it is replete with 

 interest. It would be well if the Philadelphia Academy would 

 at least portions of it, with some editorial notes which 

 could now be supplied, but for which it may now ere long be too 



2. Homogone and Ileterogone (or Homogonoit* and Ileteroqo- 

 nons) Flowers.— That difference in relative length or height of 

 stamens and style, reciprocally, which in Torrey and Gray's Flora 

 ot JN orth America, was very long ago designated bv the term dim- 

 cio-dimorphism, Mr. Darwin— who detected and has made much 

 of the meaning of the arrangement— called simply dimorphism. 



■ ■ - 

 ers The first name is too long for use, and carries with it some 

 ambiguity, since it may imply a separation as well as a diversifica- 

 tion ot the sexes. Mr. Darwin's term has the disadvantage of not 

 indicating what parts of the blossom are ,//„„„•.,/„> (hermaphrodite 

 flowers may be dimorphous in the perigonium), and a more generic 

 name is now required, on account of /,■/„„„,,/,/,., etc. This has 

 been supplied hy Hddebran.l. in Germany, who has introduced 

 the term heterostgled and the counterpart homostyled These are 

 not particularly happy appellations; for the difference is in the 

 stamens as \n , ;,,„] m the latter ; s not ,, iw . lvs 



restricted to the style. Well-established terms ought not to be 

 superseded on the ground of mere improvement ; but those which 

 have not yet taken root sometimes may be. Following the analogy 

 ofpertgontum or perigone, I propose the more exactly expressive 

 term ot heterogo-ne (or heterogonous) for these flowers, such as 

 those of P,-,. ythrum,ete. The counterpart, 



- 

 kind of differentiation. These terms, either in Latin or English 



