S6 THK JOURNAL OF BOTANY 



pieces of cardboard, out of whicli figures and letters had been cut, 

 thus allowing the direct influence of the san to act on the well- 

 defined areas cut out of the card. The spores were inactive on the 

 exposed patches, the gelatine remaining clear, while the darkened 

 parts underneath the cardboard were opaque with the crowded 

 colonies of bacteria that had developed from the spores. 



The same influence appears to have been equally powerful in 

 the turnip-field, for in many cases the only trace of injury left was 

 a clean walled cavity at the top of the turnip, from which no 

 information could be gathered as to its origin. 



It is very doubtful whether any true reparation of the injury 

 followed the growth in the lateral buds. These young growths 

 could not arrest the progress of the bacteria in the turnip, much 

 less could they repair the injury that had been done. ■' 



SHORT notp:s. 



Aublet's 'Histoire des Plantes.' — Dr. Otto Kuntze, during his 

 recent visit to this country, called my attention to a peculiarity in 

 the Kew copy of Aublet's Histoire des Plantes de la Giiiane franqaise: 

 namely, at p. 440 there is a genus Tatnonea established, completed 

 on the following page with the specific name (/uianensis. This had 

 been duly registered in the Index Kcwensis, but he had not been 

 able to verify the citation in any copy on the continent. On further 

 examination it was seen that the Tamonea on p. 440 was not indexed 

 by Aublet, but Fothergilla adjiiirabilis was given instead. I have 

 since then referred to such copies of the book as I could find in 

 London, with this result, that the Banksian copy at the Natural 

 History Museum is like the Kew copy, while the copy in the 

 Linnean Society's Library, and two copies in the British Museum 

 at Bloomsbury, are like those described by Dr. Kuntze — that is, 

 at the place mentioned the name is changed to Fothergilla ad- 

 mirahilis, and on the plate (t. 175) to mirabilis. I can only suggest 

 that the author found out when indexing that he had printed two 

 genera Tamonea (pp. 440, 659), and consequently cancelled the two 

 leaves, pp. 339-442 ; the issue of the uncorrected copies must have 

 been accidental. It would be interesting to know if any other copies 

 are like those at Kew, and the Botanical Department, British 

 Museum. — B. Daydon Jackson. 



New British Hepatice. — During a fortnight's visit in June, 

 1900, to the Ben Lawers district of Perthshire, I added the following 

 hepatics to our flora: — Cephalozia pleniceps (Aust.) c. per., growing 



* Some days after this paper was in type for the Koyal Agricultural 

 Society's Journal, Prof. Potter read to the Royal Society a paper giving the 

 results of investigations he had been making on this turnip disease. By his 

 kindness we received a proof of his paper the day before it was read. He 

 named the bacterium Facudomonas destructans. 



