640 
TO CORRESPONDENTS. 
BOOKS RECEIVED. 
Essentials of Materia Medica and Therapeutics. By Alfred Baring Garrod, 
M.D., F.R.S., etc. Second Edition, revised and much enlarged. London: Walton 
and Maberly. 1864. The following extract from the Preface will indicate the cha¬ 
racter of this new edition of an important text-book of Materia Medica:—“ A Table 
of Contents, by a glance at which the reader will at once see all drugs scientifically 
arranged, together w'ith their pharmaceutical preparations, is contained in the present 
edition ; as likewise a table indicating the principal changes in nomenclature and im¬ 
portant differences of strength between preparations in the British Pharmacopoeia, and 
in the London Pharmacopoeia, 1851; and lastly, a somewhat copious Posological 
Table is now introduced.” A separate volume, devoted exclusively to the consideration 
of the value of medicines in the treatment of disease, and embracing the whole sub¬ 
ject of Therapeutics, is expected to appear in a few months. This was originally in¬ 
tended to have formed part of the present volume, announced under the title of 
“ Medicines : their Nature and Value in the Treatment of Disease but the publication 
of the British Pharmacopoeia rendered it desirable that a text-book should be in the 
hands of students without delay. We hope to notice this work fully in our next 
Number. 
On the Practice of Employing Certain Substitutes for the Genuine Ingredients 
in some Articles of Daily Food : considered as it affects the Health of the 
Community. A Paper read before the Brighton Literary and Scientific Institution. 
Contributed by a Lady. London : II. K. Lewis, 15, Gower Street North; Brighton : 
John Farncombe, 92, Eastern Road. 
Paper read before the Social Science Association, On the Production and Use of 
German Yeast in this Country. By John Mackay, Pharmaceutical Chemist, 
Edinburgh. Printed by Alexander Grant. 1864. 
Notes on the British Pharmacopoeia, 1864. Leeds: Harvey and Reynolds. 1864. 
ISrratum.—In the report of the proceedings of the Nottinyliam Chemists' 1 Association , 
page 555, we are requested to make a correction in the words attributed to Mr. Heath- 
field, which should run thus :—“ The practical value of many of the processes was much 
diminished by the difficulty experienced by many who had no acquaintance with chemi¬ 
cal manipulation, and by the imperfect manner in which some of the descriptions were 
indited.” 
TO CORRESPONDENTS. 
In reply to several Correspondents, we beg to state that during the present session 
students will be examined in the London Pharmacopoeia; after October an acquaintance 
with the British Pharmacopoeia will also be expected. 
Chemicus. — Syrup of Phosphate of Iron. Vol. I., Second Series, page 497. It is 
now recognized in the British Pharmacopoeia. 
X. Y. —Test-paper for detecting ozone is made by immersing white paper in solution 
of iodide of potassium and starch. 
Chirurgus. — Essence of Camphor. Camphor 5 iij", Aqua Destillata 5 V 3 ', Sp. Vini Rect. 
3 X. An Essence of Peppermint for the purpose intended may be made, in the pro¬ 
portion of 2 drachms of Oil of Peppermint to 16 ounces of spirit. 
An Associate. — Acetate of Silver is soluble in Ammonia. 
Pharmaceutist (Wolverhampton).—A decoction of Castor-oil leaves is sometimes 
applied to the breast for the purpose of promoting the secretion of milk. 
F. II. P. —A list of Registered Apprentices appears monthly in the Journal. 
Garibaldi. —An examination would be advisable, although not compulsory, in the 
case alluded to. 
M. P. S., S. B. should consult any work on Materia Medica. 
Mr. Leay and Mr. Pooley (Bath) and A Druggist (Birmingham) are thanked for their 
communications. 
An Assistant (Ilalesworth).—See our first notice to Correspondents. 
Anxious Inquirer (Jamaica).—( 1 ) See our first notice to Correspondents. (2) Pereiras 
Materia Medica. About October next. 
Botanicus. —Bentley’s ‘Manual of Botany’ and Babington’s ‘Manual of British 
Botany.’ 
