424, Miscellaneous. 
Feb. 28. Nordmannia cordifolia. Mar. 11. Scilla bifolia, ceerulea (13th 
Mar. 1. Hyoscyamus Scopolia. of March). 
1. Primula nivalis. 11. Pulmonaria mollis. 
2. Doronicum caucasicun. 11. Vinca major. 
2. Tussilago nivea. 12. Tussilago alba. 
4. Narcissus pumila. 12. Sisyrinchium grandiflorum. 
5. Anemone Pulsatilla. 13. Hyoscyamus Physaloides. 
7. Asarum Europzum. 13. Cheiranthus Cheiri. 
8. Omphalodes verna. 14. Draba aizoides. 
9. Iberis sempervirens. 14. Aponogeton distachyon (in 
11. Cardamine hirsuta. open-air pond). 
11. Erythronium Dens-Canis. 14. Symphytum caucasicum. 
11. Scilla bifolia, alba. 14. Ribes sanguineum. 
Mr. Evans stated that he had made similar observations on the 
flowering of plants in the Experimental Garden. In a warm situa- 
tion Sisyrinchium grandiflorum and Primula denticulata were in flower 
on the 19th of February. Bellis perennis flowered on the 25th of 
February, and the Apricot on the Ist of March. 
Specimens of dye-woods were sent for exhibition by Michael Con- 
nal, Esq. 
Mr. Stark exhibited specimens of Leptothrix tinctoria and Chylo- 
cladia refleca from Mr. Ralfs ; also of Sphacelaria plumosa in fruc- 
tification, S. scoparia from Arran, and 8S. filicina from the county 
of Down, Ireland. 
MISCELLANEOUS. 
On the Pathology of the Silk-Worm (Bombyx Mori, L.). Examina- 
tion of the Blood. By ¥F. KE. Guirtn-MENEVILLE. 
Tue author has directed his attention to that most terrible malady 
which attacks the silk-worm, and is known in the nurseries by the 
name of Muscardine. It depends upon a microscopic plant belonging 
to the group Botrytis, which developes itself in the worm whilst living, 
and destroys it at the very period at which it spins the precious 
cocoons which ought to repay all the care and expense bestowed 
upon the animal. 
The blood of a healthy silk-worm examined as it leaves the body, 
exhibits under the microscope, globules analogous to those of the 
human blood ; but these globules are developed and reproduced from 
each other during the entire course of the life of the animal, and pass 
through the following phases, which may be observed in the same 
drop of blood. At first there are minute globules exhibiting in their 
centre simply a single opake point ; the globule when grown larger 
presents a nucleus composed of several granules of equal size. At a 
third period, these granules become disaggregated and tend towards 
the circumference of the globule; finally, they push outwards the 
various points of its external envelope upon which they press ; hence 
the circumference of the globule presents projections resembling buds 
which soon open and give passage to the granules which have pro- 
duced them ; these when once set free in the serum become surrounded 
by a transparent membrane, and form new globules in the first stage 
of development. These curious facts, which the author only admits 
