11 



raised 3,000 specimens from seeds. From these he has prepared 

 tinctures and oils for medical purposes. 



See annual report of Wiggen and Husemann of progress in 

 Pharmacy, etc., Gottingen, 1871. 



By the assiduity of Dr. J^igne-Dupuytren, this tree has been 

 carefully cultivated in the garden of the French Hospital of the 

 Mutual Benevolent Association. So, that institution enjoys already 

 the benefit of the tree hygienically, and has its supply of leaves for 

 tinctures and syrups. The leaves steeped in boiling water are also 

 used as a ptisane or beverage. 



However obnoxious to parasites in general this tree may be, it 

 appears it nevertheless has its own species in the Psylla Eucalyiiti. 

 This insect is an Hemipteron, and appears on the Eu. dumosa. 

 It deposits a species of manna, called in Australia Lerp or Laap. 

 It is a white substance, 53.1 per ct. of sugar syrup and 46.9 p.c. of 

 a special modification of starch. This is prized by the inhabitants 

 as a Manna ; and is greatly sought for by the bees, who convert it 

 into honey. Dobson (entomology) describes it as the cup-like 

 coverings of the Psyllida^, but Wittstein mentions six varieties of 

 Psylla, and that one species produces a colored Lerp handsomer than 

 the white, but as a deposit beneath the cup like shields of the insect. 



See same annual, Gflttingen, 1870. 



If this insect derives his Lerp from the aromatic and balmy oil of 

 the Eucalyptus, and furnishes an agreeable aliment for the inhabi- 

 tants, and a Mt. Ilymettus-like honey stuff for the bees, certainly the 

 busy- little insect manufacturer, parasite as he is, may be freely 

 pardoned. Very respectfully yours, 



A. B. Stout, M. D. 



From experiments recently made upon myself, I find that small 

 doses, 3 ij to 3 iij, of the infusion of the leaves (of young trees) 

 drank when cold, quiet the nerves and induce sleep ; quite likely, 

 in ordinary cases of wakefulness, a pillow stuffed with the leaves 

 would produce the same result. My friend, Dr. Kellogg, has pre- 

 scribed the infusion in dyspepsia, and reports favorably. In addi- 

 tion to the many valuable properties of the Blue Gum herein recited, 

 I have no doubt but camphor in considerable quantity can be ob- 

 tained from it. 



