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CAPSULES FROM A NORMAL JIMSON WEED 



These capsules are from a single normal plant and are arranged to show the internal structure 

 and resulting outlines when seen from two different positions. Capsules of Jimson Weed 

 correctly oriented in reference to central section, (a) Placental side showing ovate outline; 

 (b) septum side showing elliptical outline; (c) top view; (d) cross section through middle; 

 (e) cross section near apex leaving seeds intact on one side of septum and removed on other, 

 exposing placenta; (/) placental side, outer walls removed, seeds intact; (g) the same, seeds 

 also removed; (h) like (/) but septum side; (?) the same but seeds removed from one side 

 and half of outer wall left intact. (Fig. 5.) 



simple Mendelian pair in inheritance. 

 The mutations on the three lovi^er rows 

 in Fig. 6 have been given provisional 

 names taken chiefly from capsule or leaf 

 peculiarities. Reading from left to right, 

 we have on the second row from the top : 

 112 



"Sugarloaf" with characteristically 

 shaped capsules and stunted spines: 

 "New Species" with spherical capsules; 

 "Globe" with globose, depressed cap- 

 sules and stout spines; and "Glossy" 

 with small shiny capsules. On the 



