NEW PUBLICATIONS. 125 
Della Distribuzione Geografica dei Licheni di Lombardia e di un nuovo 
ordinamento del genere Verrucaria. Dal Dr. Santo Garovaglio, Prof. 
di Botanica nella R. Univ. di Pavia, ete. Pavia: 1864. 8vo. pp. 34. 
Sui più recenti Sistemi Lichenologici e sulla importanza comparativa dei 
caratteri adoperati in esse per la limitazione dei generi e delle specie. 
Dal Dr. S. Garovaglio. Pavia: 1865. 8vo, pp. 34. 
Sugli Organi riproduttori del genere Verrucaria. Nota del Dottor 
Giuseppe Gibelli, Prof. di Storia Nat. nel R. Liceo di Pavia. Milano: 
1865. 4to, pp. 14. Plate. : 
Tentamen Dispositionis Methodice Lichenum in Longobardia nascentium , 
auctore Sancto Garovaglio. Mediolani: 1865. 4to, pp. 88. 5 plates. 
These four works all relate to the same subject. In the first of 
them, Professor Garovaglio announces his intention to publish a series 
of memoirs, in which he would describe accurately the several species 
of Lichens growing in Lombardy, illustrated with microscopical details 
' of their minute internal organization. The materials for this, he has 
collected during the past thirty years, having journeyed through every 
part of this singularly favoured province of Italy, which, from various 
concurring causes, furnishes a greater variety of Lichens than any 
similar country of Europe. This he ascribes to the gradual elevation of 
Lombardy from the lower region of the Olive and Laurel to the limits 
of eternal snow, affording in a circumscribed space under the same 
parallel of latitude, a regular succession of zones, similar to those 
found in passing from the tropics to the polar circles, together with the 
notable difference of temperature, which the varied course of the iso 
thermal line makes from place to place, according to tbis elevation. 
hen enters into a detail of the principal geographical and geo- 
logical features of the district, enumerates some of the rarer Lichens 
which he has collected on the several geological formations, and de- 
tails the many new Lichens which his own researches have added to the 
general store, several of which have been named after him. 
the second work, the Professor passes in review the various 
systems which have found favour among different schools of lichenists 
in modern times; and states those principles by which he himself pur- - 
poses to be guided, and sue he enlarges upon more fully i in the 
Prolegomena to his * Ten 
In the third work, Sube Gibelli narrates the result of a "ya Bee 
