The Colson Telephone.--3 engravings

The Meldometer.--An apparatus for determining the melting

points of minerals

Touch Transmission by Electricity in the Education of Deaf

Mutes.--By S. TEFFT WALKER.--With 1 figure

V. HORTICULTURE.--Candelabra Cactus and the California Woodpecker.--By

C.F. HOLDER.--With 2 engravings

How Plants are reproduced.--By C.E. STUART.--A paper read

before the Chemists' Assistants' Association

Scientific American Supplement, No. 531, March 6, 1886 · 第 10 / 54 题