to every derangement of vision, so as to preserve
the sight to extreme old age.

ACHROMATIC TELESCOPES, with the New Vetzlar Eye-pieces, as exhibited at the
Academy of Sciences in Paris. The Lenses of these Eye-pieces are so
constructed that the rays of light fall nearly perpendicular to the surface
of the various lenses, by which the aberration is completely removed; and a
telescope so fitted gives one-third more magnifying power and light than
could be obtained by the old Eye-pieces. Prices of the various sizes on
application to

WM. ACKLAND, Optician, 93. Hatton Garden, London.

* * * * *

TO ALL WHO HAVE FARMS OR GARDENS.

THE GARDENERS' CHRONICLE AND AGRICULTURAL GAZETTE.

(The Horticultural Part edited by PROF. LINDLEY,)

Of Saturday, July 23, contains Articles on

Agricultural Society's show at Gloucester
Agricultural College examination papers
Atmospheric agents, influence of, by Mr. Rigby
Attraction, capillary
Books reviewed
Bottles, to cut, by Mr. Prideaux
Broccoli, winter
Calendar, horticultural
---- agricultural
Cattle breeding
Diclytra v. Dielytra
Drainage and capillary attraction
Ellipse
Fir leaves, uses of dried, by Mr. Mackenzie
Forests, royal
Frog, reproduction of, by Mr. Lowe
Fruit preserving
Fungi, eatable
Gloucestershire, trip through
Grove Gardens, noticed
Guano, Peruvian
Heating, galvanised iron for, by Mr. Ayres
Holt forest
Honey
Implements, agricultural, at Gloucester
Iron, galvanised
Manure, peat mould as
Mechi's (Mr.), gathering
Mildew, grape
Mulberries, to propagate, by Mr. Brown
Mushrooms, bad
Peat mould
Plant-houses, to fumigate, Mr. Whalley
Potato disease
Potentillas
Poultry at Gloucester
Preserving fruit
Roses, Bedding
Sheep, breeds of
---- handbook on
Skimmia Japonica, by Messrs. Standish and Noble
Societies, proceedings of the Entomological, Caledonian and Cheltenham,
Horticultural, National Floricultural, Belfast Flax
Spermatozoids
Stock breeding
Strawberry, Nimrod
Stylidium fasciculatum
Tanks, galvanised, by Mr. Ayres
Toad, reproduction of, by Mr. Lowe
Vine, culture of
---- to propagate, by Mr. Brown
---- mildew
Wheat, culture of, by Mr. Rigby

THE GARDENERS' CHRONICLE and AGRICULTURAL GAZETTE contains, in addition to
the above, the Covent Garden, Mark Lane, Smithfield, and Liverpool prices,
with returns