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INK POWDER POR MARKING HOP-POCKETS. 
usual. This memoir which extends over 70 pages, has been printed as a sepa¬ 
rate pamphlet, and is one of the most interesting and valuable records of its 
author’s labours on a single subject. Numerous samples of the opium of 
Turkey, Egypt, Persia, India and Europe were submitted to examination with 
results that served to prove that morphia is a much larger constituent of that 
drug than had been commonly stated or than is even at the present time ad¬ 
mitted. Of twelve specimens of commercial Anatolian opium analysed by M. 
Guibourt, none afforded less than 9 60 per cent of morphia or 11*70 from the 
same opium when dried ;—while the richest sample yielded 18*24 per cent from 
soft, or 21*46 from the opium when dried. The mean of the analyses showed a 
percentage in morphia of 12*37 from soft opium or 14*72 from dried. The 
most productive opium examined was some collected at Puchevillers in the de¬ 
partment of the Somme, which when deprived of moisture, afforded no less than 
22*88 per cent of morphia. M. Guibourt’s essay concludes with the recommen¬ 
dation that opium for use in medicine should contain from a minimum per¬ 
centage of 10*20 to a maximum of 12*75 of morphia, or when dried from 12 to 
15 per cent.* 
But earnest and constant as were M. Guibourt’s labours for the advance¬ 
ment of scientific pharmacy, he was by no means satisfied with the amount 
of time he could devote to his favourite pursuits, as may be gathered 
from the following lines, part of a letter written in 1860 to a friend in 
London: “. . . Pour moi, je n’ai plus le terns de rien faire; je rencontre a 
“ chaque instant des sujets d’etude qui meriteraient un long examen ; j’y jette 
“ un regard curieux et je les abandonne faute de pouvoir continuer. J’aspire 
“ au moment ou je pourrai me liberer des occupations qui me sont imposees 
“ par l’Ecole de Pharmacie; mais quand ce moment arrivera, me restera-t-il 
“assez d’activite et d’aptitude pour me remettre aux etudes commencees?” 
A careful, judicious, elaborate style of research, embracing a subject under 
all its aspects, and a style of writing remarkable for precision, gravity and ele¬ 
gance characterized M. Guibourt’s labours, and will render his works of perma¬ 
nent value. 
D. H. 
INK POWDER FOR MARKING HOP-POCKETS. 
Douthwaite v. Wimble and Nutt. 
This case, which is of considerable importance to the trade, was tried at the Croydon 
assizes. The plaintiff is a chemist, carrying on business in Bisbopsgate Street, and was 
the owner of the invention called “ Douthwaite’s Improved British Ink Powder.” The 
defendants are in the same line cf business at Maidstone. In the year 1829, the father 
of the plaintiff, who at one time resided at Maidstone, invented the powder in question, 
and, when he transferred his business to his son, handed over to him at the same time 
the invention he had referred to. For years plaintiff had manufactured and sold the 
powder, whereby he realized considerable profit; but in July last he ascertained that 
Messrs. Wimble and Nutt, the defendants, had for some time been selling a precisely 
similar powder, in a cover so similar to his own that the general public could not distin¬ 
guish between them. He procured a packet of that sold by the defendants, and found 
his wrapper was imitated in every particular, with the exception of the printing on the 
margin, where the words “prepared only by the proprietors” were substituted for “pre¬ 
pared only by Douthwaite.” Believing, therefore, his trade mark had been fraudulently 
imitated, he took the present course to uphold his right. Witnesses were examined in 
support of this view of the case. 
For the defendants, it was contended that plaintiff’s trade mark had not been imitated 
* The new French Codex requires that soft Smyrna opium should contain at least 10 per 
cent, of morphia. 
