62 THROUGH GLADE AND MEAD. 
cold and arctic Asia, as well as across America from 
New England to the far West. 
Linnzus named in honor of a favorite pupil, Peter 
Kalm, a small genus of beautiful, exclusively American, 
plants. Kalm was destined by his family for the church, 
but after hearing a course of lectures by Linnzus, he 
determined to devote his life to the study of natural 
history. In the interest of the Royal Swedish Academy 
he traveled quite extensively in this country, especially 
in Pennsylvania, New Jersey, New York and Canada, 
about the middle of the last century, and sent home 
many new plants. Of the six known species of Kalmia, 
three are found quite abundantly in the county, even 
within the city limits, the pale laurel (K. glauca, Ait.), 
which comes into bloom early, the sheep laurel (XK. an- 
gustifolia, L.), and the mountain laurel (K. latifolia, 
L.), perhaps the most conspicuous flowering shrub in 
June. Kalmia blossoms have a special adaptation for 
cross-fertilization that is worthy of notice. In the flow- 
er-bud each of the ten anthers is lodged in a small 
cavity, and the filaments are nearly straight. When 
the saucer-shaped corolla is opened, these filaments are 
curved outward and backward, resembling a curved 
spring. The anthers are not dislodged from the little 
cavities above mentioned unless disturbed. Humble- 
bees in search of nectar touch the filaments, which 
spring back with considerable energy and project the 
