330 



THE AMERICAN 



1 the coloi- 

 li i\c mack 

 ulj about 1 



I ill III ^oout 



II mil,„o slit, liut 111 lU 111,11 stu, s, In, 111 Ih, (_E[tOthc 

 1 ituic toim Wl imist attend to habits,, as iv ell as. to enter- 

 al itiiirtiiri, foi It may— and I biliive dot s— fiequtnlly 



i|.)«iitliil ilth,iii_'li Ihi , xtiiml still, lull 111,1 thi coloia- 



I give herewith lifjuii ii i ■ 

 fS, drawn by Mr. Hill i 

 barley-gall8. It is ii .i i . 

 this has already bem ,l.„,i i 



(jv. r. Rep. ui, lu). lua-a.) 



I do not deny the ijossibility of the Joint 

 ri'SiM-ctivoly wlu-iit, ryo and barley heir, 



■'i,i:,i.rii:.,;i i„i'i. ■-..•• (s..,. r 



^- 1) ol* Fsosoma hordei 

 ,-■ bred from Canadian 

 . cribe the species, as 

 nil manner by Fitch , 



tinct galls, anil of one of which there is an autumnal agamnus 

 dimorphous Q—C. q. aciculata— while of the other species 

 (C q. inanis) I am as certain as I can be of any negative fact 

 that no such dimorphous $ exists . Yet the cabinet speci- 

 mens of the two vernal types cannot be distinguished; and 

 any closet naturalist who received a hundretl of each of them 

 would infallibly pronounce them to be all identical. But 

 that there must exist internal sti-uctiiral differences between 

 the two, and consequently thai llu' twu iin- disliiu't species, 

 is sumciently proved by iwo ,s,'|,;uai,- la.i : Ni , that the 

 galls produced by the l\V" aiv inv arial.ly iliii, n iil , whence 

 it follows that the gall-, 

 the internal oii^an ih: i 

 in Hie two; ■-'ml. 

 liiit a single 1\ 1 



-..tly I 



n licisiin, anil ,-ijiisei|uently 

 at poison, must be different 

 if one form gives origin to 

 system of the other form 

 and ,linmrphous QQ, and 



