8 FRIEDRICH WELWITSCH: 
beautiful flora of this mountainous country, watered with innumerable 
streams running to the south to join the Cacolovar, which flows into 
the Cunene, and covered with pasture-lands always green and fresh ; 
account of the botany of Huilla, which—li f the mountain: 
the Bight of Biafra, since so successfully investigated n— 
ars a strong similarity to that of $ given in a letter to 
? 
M. De Candolle, written by Dr. Welwitsch after his return to Portugal, 
and published in the ‘‘ Bibliothtque Universelle de Genéve” for J uly, 
1861, with remarks by M. De Candolle 
Over 2000 species were collected in the province of Benguela by 
Dr. Welwitsch, whose investigations in this attractive country w 
Lo Huilla, founded about three years previously, was attacked 
g of Munanos to the number of 15, ey held it 
closely blockaded for two months, during which the little garrison, of 
Fe h was a member, kept them bravely at bay, until 
they at length gave up the siege and contented themselves with carry- 
ing off all the flocks they could find and dispersing among the moun- 
returned to Mossamedes and Loanda, whence, wounded and stricken 
with fever and dysentery, he embarked for Lisbon with his immense 
collections, arriving in the Tagus in J anuary, 1861. 
is herbarium, with which we have chiefly to do, is undoubtedly 
the best and most extensive ever collected in Tropical Africa, whether 
i sic interest o 
fe travellers more or less ignorant of botanical science. No 
expleration ever more conclusively proved the importance of entrust- 
ing investigations 0) 8 trained botanists and me 
importance of his herbarium may be judged of from what Professor 
Oliver says in the preface to the Flora of Tropical Africa, ‘‘ For o 
material Lo i 
in respect of judicious selection and admirable preservation, are with- 
out rival. His 
