256 1. S. Hunt on the Theory of Types in Chemistry. 
tility to the soil, producing crops of corn from eighty to one 
hundred bushels an acre, remunerating the husbandman for his 
extra labor in replowing and replanting his fields. Fruit of all 
ki was abundant, especially apples and peaches. All the 
smaller fruits were in great perfection. Grapes matured without 
much loss from mildew or insects. Melons were never better 
or more plentiful. The forests abounded in’ acorns and nuts, 
bending their branches under their uncommon load. every 
ae Eig Sugar maple; 26th, Golden bell or Forsythia virl- 
late frosts.—April 1st, Primrose in bioom; 8d, Hyacinth; 6th, 
11th, white Narcissus; 15th, Apple tree in bloom; 16th, 
ud or Circis canadensis, Hydrastis canadensis; 18th, Cornus 
: : 1 
Florida; 234d, Lilac; 26th, Tulips in bloom.—May st, Black 
w tree in bloom; 2d, Quince tree, Harebell; 5th,- Native 
nD 
Pseudoaensia; 14th, Prunus Virginiana; 25th, Syringa Phila- 
ee ere 
_ Apr. XXIV.—On the Theory of Types in Chemistry; PY 
T.. STERRY hoon ER. : 
In the Annalen der Chimie und Pharmacie for March, 1860 
(cxiii, 293), Kolbe has given a paper on the natural relations 
between mineral and organic compounds, considered as ® acl 
entific basis for a new classification of the latter. He objects 1 
the four types admitted by Gerhardt, (namely, hydroge?, hyare 
chloric acid, water and ammonia,) that they sustain to omen? 
compounds only artificial and external relations, while he com 
ceives that between these and certain other bodies there af 
ural relations having reference to the origin of the orga™° ‘a 
