PHARMACY AT THE DUBLIN EXHIBITION. 
151 
Mannite, obtained from the leaves, flowers, and fruit of the olive in various 
stages of development, sent by Professor Pi Puca, who has thoroughly 
worked out the whole subject of the formation of this sugar in different parts 
of the tree. Asparagine, Caffeine, and Citrate of Caffeine are sent by P. 
Galgano (Sienna). J 
In the Japanese collection are one or two rolling blinds, made of the mys¬ 
terious rice-glass, . about which there was so much discussion at the time of 
the London Exhibition of 1862. As they hang here, however, the only 
senses which one can bring to bear upon any attempt at unravelling the sup¬ 
posed secret of the composition ol this glass, can discover in it nothing which 
in any way distinguishes it from the ordinary glass of our own country. 
Siam— or rather Mr. Simmonds, who appears to represent all the out-of- 
tne v ay countries in the world at the Exhibition—sends some curious things. 
1/ood Oil, seeds of JPelumbium specie sum (made into flour, currie powder, 
and eaten like chestnuts), Bastard Cardamoms, Sipziet, and JPun, —both desi¬ 
derata to the full enjoyment of betel, the Pun being lime, coloured pink by 
turmeric and Luet nangret, the -coagulated blood of the rhinoceros, used in 
medicine. 
From Switzerland we might, of course, expect to receive good samples of 
sugar of milk, and those sent by the .Brothers Lotscher (JVlarbach) are very 
good indeed; but one could have scarcely hoped to have found among the 
contributions from this country so magnificent a collection of chemical°pro¬ 
ducts as those in the neat case which bears the name of Henner and Co. (Wyl). 
A chemist, without even being at all enthusiastic, might spend an hour before 
this case in contemplating products which are rarely seen out of the laboratory 
of research; the pharmaceutist will find in it specimens of salts with which he 
is indeed familiar, but which in the new beauty which they borrow from per¬ 
fect crystallization and absolute purity almost assume a new character. The 
photographer wall recognize the compounds with which he is accustomed to 
manipulate, but he can scarcely hope to procure such chemicals through the 
ordinary channels. The price-list of MM. Henner lies before me, and, al¬ 
though there is a novel sensation experienced in seeing such names as JcaJco- 
dyle, chinovinic acid, selenie acid., amygdalin, diastase, saponin, and mercap¬ 
tan, placed in parallel columns with vulgar francs and centimes, y r et I must re¬ 
frain from quoting further from its contents. MM. Henner have certainly 
brought together the most beautiful collection of produits chimiques which 
it has ever been my lot to inspect. If, however, it is at all approached in 
the Exhibition, it is by the wonderful series of metallic salts shown in the 
Zollverein department by Dr. Schuchardt, of Muskau, in Silesia. This con¬ 
sists of a systematically arranged series of compounds of the metals cobalt , 
manganese, nickel, iron , copper, zinc, cadmium, copper, tin, uranium, lead, 
antimony, and bismuth. I may just take the cobalt series as an example, in 
order to show the completeness of the collection and give some idea of its 
value. Ot cobalt there are shown oxide, arseniate, nitrate, phosphate, silicate, 
chloride,^ sulphate, acetate, borate , chromate, carbonate , and oxalate. The 
series of compounds of each of the other metals named is nearly as exhaus¬ 
tive. There are besides two bottles, containing perhaps more vanadiate of 
ammonium and vanadiate of sodium than perhaps exists in all the labora¬ 
tories in Europe. 
I understand that a well-known London firm has purchased the entire of 
this valuable collection. 
. Hemme and Friedmann (Berlin) have a pretty large collection of essential 
oils, and of flavouring essences, and compound ethers. Many of the latter 
are used in Germany for giving distinctive character to the numerous varie¬ 
ties ot ardent spirits, ot which our Teuton neighbours are so fond. We have 
