264 
prising twenty specimens, neatly labelled-and put up, representing 
as many genera. Prof. Underwood says: ‘We have issued a 
few numbers of representative, though common plants, in order 
to bring the price down to a reasonable amount, and to make the 
sets valuable to beginners in the study. All the orders, typical 
species of all the larger genera, and illustrations of thallose, in- 
cubous and. succubous Jungermanniacez are therefore included.” 
The price for sets is a dollar and a quarter, postpaid. 
Forestry in Europe.—(Reports from the Consuls of the United 
States, Washington, 1887; 320 pp.). From the table of contents 
we learn that .the subject is treated geographically, including 
areas under forests, kinds of trees, administration and privileges 
of, revenues from, destruction and reforesting of forest areas, 
forest schools, etc. 
Mr. C. R. Orcutt, of San Diego, Cal., desires to correspond 
with any naturalist wishing to undertake exploring and collecting 
in Southern California, Western Mexico and Central America. 
He offers to pay expenses, and promises credit and appreciation 
in the future as a reward. 
Contribuzione allo studio del Buxus sempervirens,L. G. A. 
Barbaglia. (Atti della Societa Toscana di Scienze Naturali, viii., 
pp. 256-270). This paper is a chemical study of the plant to 
separate the alkaloids, Bussina, Parabussina, Bussinidina, Para- 
bussinidina and Bussinamina ; also a study of the coloring matters : 
and the wax which occurs so abundantly on the upper surface 
of the leaves. 
Sopra un Nuovo Morbo che attacca i Limoni,e sopra alcuni 
Lfomicett.—G, Gasperini. (Atti della Societa Toscana di Scienze 
Naturali, viii, pp. 315-339). This disease of Citrus Limonum 
attacks the fruit when ripe, and in sixty hours completely de- 
stroys it. The parenchyma shows threads of a mycelium which 
has proved sterile thus far, and it has been impossible to deter- 
mine what fungus or fungi are the cause of the mischief. 
The author also studied on the lemon and the orange, Asfer- 
Sillus niger and A. clavatus, and describes three species possibly 
new, A. violaceo-fuscus, A. elegans and A. variabilis. 
: Sull’ inspessimento della parete nelle cellule Liberiane dei 
_ piccioli fogliari di alcune Araliacee.—P. Pichi. (Atti della Soci- 
