256 BOOK-NOTES, NEWS, ETC. 



to overlap each other, and to constitute not only a defensive armour, 

 but from their arrangement to admit of the growth of the organism, 

 which is thus not limited by its calcareous coat, as diatoms are by 

 their siliceous shells ; each coccolith being attached to the cell by a 

 button-like projection on its inner surface. In the rhabdospheres 

 with projecting rods, of which figures were shown, the plates 

 (rhabdoliths) do not fit into each other as figured in the 'Chal- 

 lenger' Report, but their bases are imbedded on the surface of 

 the cell each by itself without contact. As to the cell-contents, 

 the exhibitor had found nothing more than a granular material 

 resembling protoplasm. Thei'e was no trace of colouring matter 

 in the specimens, all of which had been brought up from a depth 

 of three fathoms. 



We regret to record the death of Samuel James Augustus 

 Salter, F.R.S., which occurred on Feb. 28th at his residence, 

 Basingfield, Basingstoke, in his seventy-third year. Mr. Salter, 

 who for many years held a leading position in medical circles, and 

 whose name was intimately associated with dental surgery, was at 

 one time a familiar figure at the meetings of the Linnean Society, 

 of which he became a Fellow in 1853. To vol. xxiv. of the Tnins- 

 aetinnn of that body he contributed a remarkable paper " On a 

 Sexual Monstrosity, consisting in the Development of PoUeniferous 

 Ovules, in two Species of Passifioni." 



Many students of cryptogamic botany in this country doubtless 

 have plants which they would be glad to dispose of in exchange for 

 foreign specimens. An opportunity for doing this is afforded by 

 the Vienna Exchange Office for Cryptosams, which is conducted 

 by Herr J. Brunnthaler, Igelgasse 11, Vienna, iv/2., from whom 

 we have received a catalogue for the current year. Some 3000 

 priced specimens are offered for exchange or purchase, and com- 

 prise Mosses, Hepatics, Fungi, Lichens, Algae, and microscope 

 preparations. In the future. Vascular Cryptogams and Bacteria 

 will also be included. The valuation depends upon the quality and 

 rarity of the specimens, the unit of value being represented by 

 one-twentieth of a shilling. The commission exacted by the Ex- 

 change is 25 per cent, of the specimens sent in to the office. The 

 specimens must be in good condition and properly labelled ; the 

 actual regulations to be observed, however, are too numerous to 

 mention here. The catalogue, the essential parts of which are 

 given in German, French, and English, costs sixpence; and, it 

 should be added, contains descriptions of some new species of 

 Fungi. Lists of the plants offered for exchange must bo sent to 

 the office by September 15th. 



We have not been able to give our list of the actual dates of 

 publication of the Kew Bulletin for 1896 — a list which we are glad 

 to know has been found useful — because the number for December 

 last has not yet appeared. Only one number has been issued 

 during the present year — that for January. 



Mr. George Murray and Dr. D. H. Scott have been elected 

 Fellows of the Royal Society, 



