important research in that region.--2 illustrations

Prehistoric Horse in America.--Curious discovery of an aboriginal
drawing in Nicaragua.--1 illustration

II. ASTRONOMY.--A Plea for the Common Telescope.--By G.E.
LUMSDEN.--The increasing interest in astronomy and instances of
work done by telescopes of moderate power, giving examples
from the work of celebrated observers

III. BIOGRAPHY.--Alfred Tennyson.--Biographical note of the
great poet, now past his 80th year, with portrait.--1 illustration

Fiftieth Year of the Prince of Wales.--The Prince of Wales
and his family, with notes of his life and habits.--1 illustration

IV. CHEMISTRY.--American Association--Ninth Annual Report of
the Committee on Indexing Chemical Literature.--A very important
report upon the titular subject, with probabilities of future advance
in this line.--The chemical index of the SCIENTIFIC
AMERICAN and SUPPLEMENT

Apparatus for the Estimation of Fat in Milk.--By E. MOLINARI.--
Details of a method of determining fat in milk, with illustration
of the apparatus employed

Further Researches upon the Element Fluorine.--By A.E. TUTTON.--
Additional researches upon this element, following up
the work outlined by M. MOISSAN.--3 illustrations