Occurrence of Foliarje-leavcs in Huscus audrogynus. 149 



Platk XL 



The figures here, drawn to one scale, are from transverse sections of 

 roots of RiiscHs androgijnus : (1) from my own garck-n at Hartree ; (2) 

 from Miss Hope's garden at AVardie ; and (3) from the Royal Botanic 

 Garden, Edinburgh. In each figure, a small portion of the section is 

 represented, including part of the inner cortical parenchyma, with endo- 

 dennis; of the pericambium; of the fibro-vascular zone; and of the 

 vied u llarij pa ren ch y ma. 



xd = Xylem ducts, 

 xp = Xylem i»-osenchyma. 

 mp = Medullary parenchyma. 



cp — Cortical parenchyma, 

 end = Endodermis. 

 pc = Pericambium. 

 ph — Phloem tracts. 



Fig. 1.— From Hartree Garden, Showing the small size of the tissue- 

 elements ; the relatively great induration of endodermis, pericambium, 

 and xylem proscnchyma; and the three distinct layers of the endodermis. 

 Fig. 2. — From Wardie Garden. Showing the larger size of the tissue- 

 elements; the relatively smaller amount of induration of these 

 elements; and the almost complete absence of the third, outermost, 

 layer of the endodermis, of which layer only a single cell (towards the 

 left side) is to be seen in the section. 

 Fig. 3. — From Royal Botanic Garden, Edinburgh. Showing the moder- 

 ate amount of induration of the endodermis, of which, however, all 

 three layers are distinctly developed; the great size and number of the 

 xrjlem ducts, &c. Tlie structure here is the most beautiful of any of 

 the forms I have examined ; and a well-prepared section is an exc^uisite 

 microscopic object. 



Report on Temperatures and Opcn-Air Vegetation at the 

 Boy al Botanic Garden, Edinl)ur(jh,from October 1882 

 to June 1884, With Begister of flowering of Selected 

 Plants, compiled from Beports read at the Monthly 

 Meetings of the Society. By tlie late John Sadler, 

 and Egbert Lindsay, Curator of the Garden, 



October 1882. — There was rain during nineteen of the 

 thirty-one days of this month. On the 26th of the month 

 there was frost, which nipped all the tender Dahlias, of 

 which there was a good show. At that date the thermo- 

 meter stood at 27° F. ; next morning it was at 30° F. 



November. — At the middle of the month the rock garden 

 exhibited a wonderful display of blossoms, including dif- 

 ferent species and varieties of autumn Crocus, &c. On the 

 9th inst. the thermometer stood at 32° F. 



December. — The thermometer, on the night of the 12 th 

 inst., fell to 7° F. A severe snow storm began on the 4th, 

 continuing till the 9th inst. At Dalkeith Gardens 40 inches 

 of snow fell, while iu the open the average fall was 25 



