X. SANITATION.--A New Disinfector.--Description of a new apparatus
for disinfecting by superheated steam and air, with tabular
statement of elaborate tests made with it.--2 illustrations. 9754

Trees from a Sanitary Aspect.--By CHARLES ROBERTS, F.R.C.S.,
etc.--The sanitary value of trees considered by this eminent
sanitarian.--The uses and abuses of shade near houses. 9765

XI. TECHNOLOGY.--A New Alkali Process.--The Parnell & Simpson
process of making carbonate of soda, combining the features of
the Leblanc and ammonia methods. 9755

A New Process for the Distillation and Concentration of Chemical
Liquids.--By GEORGE ANDERSON, of London.--An apparatus
and process especially adapted to the manufacture of sulphate of
ammonia.--The invention of Alex. Angus Croll described.--1
illustration. 9757

Barlow's Machine for Moulding Candles.--A new apparatus for
candle manufacture, fully described and illustrated.--5
illustrations. 9754

Temperature of Gas Distillation.--The mooted question discussed
by Mr. WM. FOULIS, the eminent gas engineer. 9756

The Largest Black Ash Furnace in the World.--Note of a recent
furnace for use in the Leblanc process of soda manufacture. 9756

* * * * *