278 Transactions of the Boyal Society of South Africa. 
10. 1764 Sp. PI. Protea = A (partly). 
Leucadenclron = K (partly), B, C. 
11. 1767 Syst. Nat. Protea = A (partly). 
Leucadendron = k (partly), B, C. 
12. 1770 Syst. Nat. Protea = k (partly). 
Leucadendron -= k (partly), B, C. 
13. 1771 Mantissa Protea==k, B, C, plus Leucadendron. 
14. 1774 Protea = k, B, C, plus Leucadendron and Aulax. 
15. 1778 Gen. PI. Protea = k, B, C, plus Leucadendron. 
For further details the reader is referred to an excellent account by 
Eobert Brown in the preface to his Essay, where the following summary 
will be found : — 
1. He gave the genus Protea the same extent which he at length 
assigned to it in the Mantissa. 
2. He limited it, leaving unnoticed that part to which at a later 
period he exclusively applied to the name. 
3. He resumed his first opinions. 
4. He subdivided it into two genera, giving them the same names 
which are adopted in the present Essay {i.e., Brown's Essay). 
5. He continued the subdivisions but reversed the names. 
6. United them together, thus ending exactly where he commenced. 
In 1766 the genus Aulax was founded by Bergius,t and in the fol- 
lowing year I he pubhshed descriptions of 17 species of Proteaceae all of 
which he referred to the genus Leucadendron, but which consisted of 
species belonging to various genera. Less important are the works 
of Jacob Petiver, but as they contain a few figures of Proteaceae may 
be mentioned. A considerable advance is marked by the writings of Carl 
Thunberg,§ the author described 60 species under the name of Protea^ 
some of which are still recognised ; the text is accompanied by five plates 
of excellent woodcuts, and for the first time we find species of Slatalla 
and Sorocephalus figured. Much useful information as to habits and 
months of flowering is gleaned from Thunberg's account of the Order, 
and while his descriptions are not good as a means of determining a 
species, they are excellent, so far as they go, of the actual specimen 
which was described. Thunberg again published in 1794 || and dealt 
with 61 species of Protea. An account of the Order was written by 
* R. Brown, Trans. Linn. Soc, x. (1810). 
t Bergius, "Vet. Acad. Hand. Stock.," 1766. 
I Ibid., " Descriptiones plantarum ex Capite Bonae Spei," 1767. 
§ C. Thunberg, " Botanico de Protea," 1781. 
II Ibid., " Prodromus Plantarum Capensium," 1794. 
