NATURAL HISTORY MISCELLANY. 123 
discourse before the Scientific Reunion of Insbruck, on Matter, Force and 
“The French PUN — Hirn, who, at the same time with Joule, Colding, Holtman 
and Heniholtz, disco mechanical equivalent of heat, arrived at the conclusion, which 
i pae there are three categ 
re) 
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Il 
5 
e 
E 
E 
P» 
T 
® 
= 
= 
= 
= 
et 
E 
E 
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as we n w 
retira part. But neither matter nor 
v pars generally supposed that the nervous substance, and especially the brain matter 
part in intellectual operatio dion try have 
roved that no living organ, a pun course the brain, contains free e phosphorus. If, on one side, 
si illusions must vanish before the data of an exact science, it is none the less iie. n 
li rial modificatio 
me co ottequenens ofas wor Tolconisr activity; wa nd — bnt intellectual acts 
of the individ inti onnect But it isa 
at 
entify these two activities which ab pra parallel to each other. An illustration 
can be no teleg iie com on 
ts o. 
what ve idea h 
as a function of the electro-chemical action. That is still — 
ever be regarded 
for the brain and "thought. The brain is ouly the mac chine, it is not thought. Intellig 
m ia 
hib t 
and the anatomist. What ist j y Jj 3 
eternally pre-established by 1 objeeti 
would be sterile. Logic is the statics of intell ligene e, gramm ar is its en, and language 
ts dynami I finish in saying to you u with. deep convietion: an exact philosophy should and 
NaTURE.* — During the last year we prendi à very favorable opinion 
of “ Scientific Ones.” a weekly scientific newspaper, and have now to 
m 
g It is in royal 8vo form, well printed, containing ex- 
cellent articles by the leading scientists of Great Britain, and much valu- 
able weekly tpe Everybody who can afford to do so would do 
well to subscribe to it. 
NATURAL HISTORY MISCELLANY. 
BOTANY. 
EDIBLE FuxGr. — During the last few years great attention has 
paid, by botanists on the one hand and epicures on the other, to the Sec 
qualities of certain fungi. Notwithstanding the prejudice generally en- 
tertained against this class of vegetable productions, extending in Sc 
land, Wales and some parts of England, even to the common mushroom, 
Nature, a weekly illustrated journal of science. Royal 8vo, two columns. pp. 32. Twelve 
atu 
cents a number. Millan £ Co. New York, 63 Bleeker street. 
