278 THE JOURNAL OF BOTANY 
incorrect.) In vol. xx. p. 115, 1796, there is a notice of the 
sing oe on by Persoon himself, giving most of the differ- 
nces between the two publications. There is also an account of 
the new species and the three extra plates are reprinted but un- 
coloured. It is probably this sixteen-page notice that has led 
some writers astray. 
e copy of Usteri’s — in the National Herbarium 
there is a note b r. W. ruthers mentioning most of the 
bog igh in ad a eae a which was ei pong not then 
n the Museum library, a erkeley’ s copy of the work was 
a i oa in 1904. in’ is cover Ag the latter is a letter from 
Persoon to Sowerby, and as so little is known of Persoon, the 
half-bred Hottentot, who had an scchaceeihiaes influence on the 
systematic study of fungi, its publication may be of interest :— 
: Dusk see 
By Dr. Bouttatz You shall have received already the 
packet ‘samt to You least Hasterday with great desire for Your 
kind answer to the questions I made so free to el es You in 
my. letter the reply to them being of any rive to 
“At present I enjoy the pleasure to send You the wast part 
of my Observat. Mycologice. The first and second volume of my 
edition of Thunberg’s Disertations I add too, believing to have not 
yet ma aie a sufficient equivalent for Your beatiful work on 
Fungusse Long time ago I he also have sent to You my 
n case You should not have writte w by the 
quarter courier, id ad be as kind as to ewe Yabtees on me  iaroae gh 
the common mail by Cuxhaven 
" Benataie with tetnock estimation 
“ Your most obedient servant 
“C. H. Prrsoon, Dr. 
“ Goettingen, the 19th June, 1800.” 
J. RAMSBOTTOM. 
[We have also in the ee emma of eae? an autograph letter 
to Robert Brown, dated Paris, 1 Mai, 1825, acknowledging the 
receipt of a presentation cy of his Prodromus, and the MS. of a 
paper, apparently unpublished :—* Veronice agrestis, arvensis, 
segetalis, et acinifolia, a et iconibus mere ea C. = 
P a drawing of V. agrestis accompanies There 
full dasccipbions of the four species: V. ioral Gpabohahall re 
