HISTORY OP INTRODUCTION OF EXOTIC FERNS. 13 
vessel fitted for river navigation, at Fernando Po ; but, 
unfortunately, after tliey bad penetrated up the river 
as far as Nupe, their ship was wrecked, and they 
were obliged to form a camp on the banks. Poor Barter, 
however, fell a victim to the deadly climate in July, 
1859. As a collector he was indefatigable in the dis- 
charge of his duties, and discovered a large number of 
undescribed plants, including several new genera, 
one of which has been dedicated to his memory under 
the name of Barteria. But, owing to the mishaps 
attending this expedition, and the difficulties of 
transit, no living plants were received from the 
interior of the country, but several Ferns were trans- 
mitted from Sierra Leone and Fernando Po.* 
No sooner had the news of Barter’s death arrived,, 
than Mr. Gustav Mann, undeterred by his fate, 
volunteered to fill the vacancy, and was appointed 
accordingly. Being unable, from want of means of 
communication, to join Dr. Baikie, he was employed 
for three years in exploring the island of Fernando 
Po and the African coast, in the neighbourhood 
of the Camaroons and Gaboon rivers. In spite 
of the difficulties and dangers attending the under- 
taking, he made several ascents of the lofty Clarence 
Peak of Fernando Po and of the Camaroons moun- 
tain on the African mainland. On the former, at 
an elevation of 5,000 feet, he found a fine new 
Gyatliea, forming groups, with stems rising to a 
height of 30 feet. We are likewise indebted to him- 
* Since the above was written, news has reached this country 
of the death of Dr. Baikie at Sierra Leone, in January, ] 865, whilst 
on his homeward voyage. 
