62 The American Geologist. January, i90u 
lo. Massif-ceiitral, under the direction of Alichel-Levy, Boule and 
Fabre. This will introduce a comparative study of three great volcanic 
regions, from geological and physiographic points of view, bringing 
out the complete chronology of the eruptions from the Miocene to the 
Quarternary. M. Fabre will continue the excursion through the 
Causses of Lozere, ihe gorges of Tarn and Mt. Aigonal. Cost 300 
francs. This excursion will begin Aug. 29 at Clermont-Ferrand and 
will end at Le Vigan, Sept. 13. 
//. The Carboniferous of central France. There will be two 
branches, one conducted by Fayol and the other by Grand Eury. 
The former will visit the coal basins of Commentry and Decazeville, 
and the other the basin of the Loire. The former will cost about 120 
francs, extending from Aug. 29 to Sept. 4, and the latter about 50 
francs, from Sept. 5 to Sept. 7. 
12. The Tertiary formations of the Rhone: Secondary and Ter- 
tiary of the Lower Alps. This will consist of two parts, one under De- 
peret and one under Haug. the former costing about 125 francs and 
the latter 75 francs. The former will begin Aug. 30, at Lyon, and con- 
tinue to Sept. 6, ending at Digne. The latter wnll begin at Digne, 
Sept. 7 and end at Sisteron Sept. 11. 
ij. The Alps of Dai/phiny, in the vicinity of Grenoble. Four 
sub-excursions will rendevoux at Grenoble Aug. 29. The first, under 
the direction of Marcel Bertrand and W. Kilian will consist of two 
parts. One part, under Kilian, will continue from Aug. 31 to Sept. 5. 
costing about no francs. It will. visit the sub-Alpine chains (upper 
Jurassic and Cretaceous), the crystalline schists of the central mas- 
sives, the sedimentary series having a Briangonnais facies, the alpine 
malm and the flysch. The other part will be guided by Bertrand and 
will examine the folded strata of Mt. Joly and the extremity of the 
Mt. Blanc range, costing about 70 francs. The second sub-excursion 
will be guided by P. Lory, Paquier and Sayn. The expense will be 
about 120 francs, and it will include the central "massif" of Mure 
(crystalline schists, coal. Trias, Lias), subalpine chains of Bauchaine. 
Devoluy, Jurassic, Cretaceous, Nummulitic and Oligocene, folds and 
domes of different ages, continuing from Sept. 3 to Sept. 12, at a cost of 
about 120 francs. The third sub-excursion, under the guidance of Kil- 
ian and Leenhardt, will visit Mts. Ventoux and Lure, with a study of 
the Lower Cretaceous scries in the regions of the Barremian and the 
Aptian. costing about 150 francs, extending from Sept. 11 to Sept. 20. 
The fourth sub-excursion includes visits to the "massif" of Pelvoux 
and Briangonnais, under the direction of P. Termier. 'Here will be 
seen metamorphic schists and gneiss, masses of granite and syenytes, 
diabases and lampeophyrs, coal with intrusions of orthophyr; Trias 
and Lias with eruptions of melaphyrs (spilytes); Upper Jurassic; 
Nummulitic and Flysch involving numerous tectonic problems; with 
an aproximate cost of 200 francs, extending from Aug. 30 to Sept. 9. 
closing at Cesanne. 
//. Massif of iMontDore, the range of the Puys and Limagne, un- 
der the direction of Michel Levy. The participants will have an op- 
portunity to study the volcanic craters of the vicinity of Clermont- 
Ferrand; based on a granitic and schistose foundation; inclusions of 
schist and of quartzyte; phenomena of endomorphism exhibited by the 
granite at Aydat. Study of the succession of eruptions of Mont-Dore. 
and of the environs of Issoire and Perrier: peperytes, basalts and 
phonolytes of the Limagne. with an approximate cost of 180 francs, 
extendine from Aug. 29 to Sept. 6. 
/J. Morvan, under the direction of Velain, Peron, and Breon. 
Will visit the secondary terranes of the valley of the Yonne and re- 
gion of Avallonnais. The Liassic and sub-Liassic series of Semur. 
