308 Scientific Intelligence. 
Several terraces exist on the border of Lake Michigan, near 
Michigan City, the highest of which—the fifth—is elevated 225 
feet above the lake. The fourth is 95 feet above the same level, 
and contains much coarse gravel. 
The plants are Jurassic, of the Lower Lias or Rhetic beds, and 
included Jeanpaulia Miinsteriana Presl., Angiopteridium Miin- 
steri Geepp., a Pecopteris (P. Fuchsi), near P. Geeppertiana, 
Ill Botany AND ZOOLOGY. 
1. Sensitive Stigmas as an aid to cross fertilization of Flow- 
A CEE E mer. Ass 
ers; by Prof. W. 
ow 
every specimen on one patch of plants. The visit lasted only ® 
few moments. All parts are quite sticky ie 
one bee on the flowers of Martynia ; she alighted on the spot 
showy part of the corolla, and crawled, first hittmg ain The 
stig 
s back is the large™ 
en is 
No pollen can be left as the insect erent : pa de 
usually certain. If not freely dusted with po. 
y certain not very freely Soe ll dusted I have know) 
em to remain closed afterwar ; 
: one on each of three sides of 
The single flat stigma of the iris ion, if 
the flower, has often been shown to be sure of cross-fertilizatiom, 
