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of the boiling point of dihydromyrcene; with a mixture of glacial 
acetic and sulphuric acids it gives the characteristic odour of myrcenol. 
I am engaged in a closer investigation of this product and in working 
out the method. 
The continuation and extension of this provisional research has 
been rendered possible to me by the support of the provincial 
Utrecht Society of Arts and Sciences. The optical determinations 
have been carried out in the organic-chemical laboratory at Utrecht. 
’s-Hertogenbosch, May 1909. 
Botany. “A brief contribution to the knowledge of endozoic 
seed distribution by birds in Java, based on a collection made 
by Mr. Barthels, on the Pangerango and near Batavia 1. 
By S. H. Koorders. 
(Contribution to the knowledge of the Flora of Java. V). 
(Communicated in the meeting of May 29, 1909). 
$1* General remarks and method. 
Mr. M. Barthels of Tjisaat, Preanger, Western Java, who has 
such an intimate knowledge of the javanese bird-fauna, was kind 
enough to comply with my request for a collection of seeds and 
fruits from the stomachs and intestines of birds, shot by him on the 
Pangerango and near Batayia. This collection, though small, had been 
made with great care; it was accurately labelled and was preserved 
in alcohol. 
I 1 or this collection, which I received here (at Leiden) from India 
last May, the scientific names of the birds had already been established 
by Mr. Barthels, but the botanical determination of the fruits and 
seeds had not yet been made. The botanical determination has now 
been accomplished, as far as time and the nature of the material 
would permit, the material of’s Rijks Herbarium at Leiden having 
been used for comparison. 
In each case I have included in quotation-marks, adding the 
letters M. B.. between parentheses, those data which were given by 
Mr. Barthels on the collecting labels, relating to the name of the 
birds, the place and date of collection and the, serial number of his 
ornithological collection. 
The ornithological investigations of the late Dr. Vorderman, of 
