Olive Oil.--Difficulties encountered in raising an olive
crop.--Process of making Oil. 7064

IV. ELECTRICITY. ETC.--Telephony and Telegraphy on the Same
Wires Simultaneously.--4 figures. 7067

The Electric Marigraph.--An apparatus for measuring the
height of the tide.--With engravings and diagrams showing
the Siemens and Halske marigraph and the operation of the
same. 7068

Delune & Co.'s System of Laying Underground Cables.--2
figures. 7069

Electricity Applied to Horseshoeing.--Quieting an unruly
animal.--3 engravings. 7069

Esteve's Automatic Pile.--1 figure. 7070

Woodward's Diffusion Motor. 7070

V. ASTRONOMY.--Lunar Heat.--Its reflected and obscure
heat.--Trifling influence of the moon upon wind and
weather.--By Prof. C.A. YOUNG. 7073

VI. NATURAL HISTORY.--The Long-haired Pointer "Mylord."
--With engraving. 7073

VII. HORTICULTURE, ETC.--Apple Tree Borers.--Protection
against the same. 7074