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spectrum of the corona instead, for which the lens however was not 
rapid enough. 
On the 24"? of May all instruments were packed and the expedition 
left the camp with the last of the 54 cases. Mr. Muruer undertook 
to have diapositives made and to send the cases to Holland, Thanks 
to his care everything has arrived in good order. 
At Padang and Batavia Messrs. MULLER, JULIUS, WILTERDINK and 
NIJLAND called on some high officials to express their thanks for the 
good care and many facilities which had been given to the expedition ; 
on the 6 of June they had an audience of His Excellency the 
Governor-General at Buitenzorg, and were invited to dinner in 
the evening. 
On the 26 of June Mr. JuLsus returned to Holland; at Padang 
he took charge of the negatives. Messrs. WILTERDINK and NIJLAND 
left Batavia on the 29 of June to return home via Japan and 
America. Before they left they had an opportunity to inspect, at 
the Batavia Observatory, many drawings and descriptions which had 
been sent in by amateur observers, who had followed up the sum- 
moning contained in the above mentioned , Directions for amateur 
observers.” 
We now come to the principal contents of this report, viz.: the 
scientific results. We will treat them in the following order: 
A, The coronagraphs ; 
B. The spectrographs ; 
C. The physical observations ; 
D. The amateur observations. 
A. Coronagraphs. 
With regard to the photographs which were obtained of the corona, 
we are sorry to report that only the short exposures with slow 
instruments have given any decent result. The long exposures and 
the exposures with rapid lenses have too much suffered from the 
general illumination of the sky and the illuminated clouds. Moreover 
several plates are fogged. 
I, Polar axis with 4 coronagraphs. 
These four coronagraphs were: 
a VOIGTLANDER collinear (the travelling camera R ; - equivalent focal 
length ~ == 87 ‘em? = 49 a) ; 
a DALLMEYER dab (D; fis ibe em, ld. 0) 
a VoOIGTLANDER portrait-objective (V,; f = 38 em. =8.6 a); 
a VOIGTLANDER euryscope (Vo; f = 85 cm. = 8.1 4). 
