RECOMMENDATIONS. 53 
next Meeting a similar Report on Thermo-Electricity, and the 
allied subjects in which recent discoveries have been made. 
Chemical Committee. 
It appears to the Committee of supreme importance, that 
Chemists should be enabled, by the most accurate experiments, 
to agree in the relative weights of the several elements , Hydro¬ 
gen , Oxygen , and Azote , or, which amounts to the same thing, 
that the specific gravity of the three gases should be ascertained 
in such a way as would insure the reasonable assent of all 
competent and unprejudiced judges. 
They think it highly desirable that the doubts which remain 
respecting the proportions of Azote , Oxygen , fyc. in the atmo¬ 
sphere should be removed ; that the proportions of Azote and 
Oxygen in nitrous gas and nitrous oxide should be strictly de¬ 
termined ; and that the specific gravities of the compound 
gases in general should be more accurately investigated. 
They recommend that the members of this Committee, and 
British Chemists in general, be invited to make experiments on 
these subjects, and communicate their results to the next Meet¬ 
ing at Oxford. 
That Mr. Johnston be requested to present to the next 
Meeting a view of the recent progress of Chemical science, 
especially in foreign countries. 
That Dr. Daubeny be requested to undertake an investiga¬ 
tion into the sources from which organic bodies derive their 
fixed principles. 
That Mr. Johnston be requested to undertake the inquiries 
which have been suggested to the Committee, into the com¬ 
parative analysis of iron in the different stages of its manu¬ 
facture. 
That Mr. West be requested to pursue the experiments 
contemplated by him, into the combinations of gaseous bodies 
when passed through heated tubes. 
That the Rev. W. Vernon Harcourt be requested to prose¬ 
cute the inquiries contemplated by him, into the chemical phe¬ 
nomena from which the materiality of what are sometimes called 
ethereal substances has been inferred. 
Mineralogical Committee. 
The Committee recommend that the Rev. Professor Whewell 
be requested to present to the next Meeting a Report on the 
state and progress of Mineralogy, 
