DEPARTMENT OF MINERALOGY. 223 



corundum, garnet, mimetite, proustite, wulf enite, and zircon have 

 been measured. Doubtful specimens of jade have been 

 determined, and experiments have been made on the effect of 

 heat on the specific gravity of that mineral. All the specimens 

 under " wollastonite " have been carefully determined. 



Minerals from the Okehampton district (scapolite, scheelite, 

 idocrase, wollastonite, apatite, fee), "smaragdite" from Burma, 

 specimens belonging to the halloysite group, anthophyllite and 

 other minerals from Madagascar, and zeolites from Iceland and 

 Ireland have been examined. 



Collections of rocks from the Azores, British East Africa, 

 Christmas Island (Indian Ocean), Iceland, Madeira, Sumatra, 

 and Var (France), have been examined ; and special reports 

 have been prepared on : — Magnetic basalts from Flores, Azores ; 

 rocks from North-West Mongolia ; and rocks collected by the 

 Bullock-Workman Expedition to the Siachen Glacier, Himalayas, 

 1912. 



Investigations have been made of the meteoric stones of 

 Baroti and Wittekrantz, and the chemical composition of 

 chondritic meteorites has been studied. 



A new stereographic protractor has been designed. 



In the chemical laboratory, quantitative analyses have been 

 made of gmelinite from Co. Antrim, and the Baroti and 

 Wittekrantz meteorites ; and quantitative determinations of 

 titanic acid have been made in priorite and zirkelite ; many 

 doubtful minerals have been qualitatively analysed. 



V. — Departmental Library. 



Arrangement. — Letters relating to the business of the 

 Department have been arranged. 



Cataloguing and Press-'marking. — 170 volumes and S3 

 title-slips have been press-marked. All the accessions, including 

 1,756 plates, have been catalogued and stamped. 



Proofs of the Library Catalogue have been read and checked 

 against the slip-catalogue in the Department. 



Particulars relating to the books received in the Department 

 in the years 1859 to 1882 have been added to the back of the 

 title-slips. 



Accessions. — 37 volumes of separate works, 32 periodicals 

 (in 411 volumes and parts), 28 pamphlets, 15 parts of works, 

 42 mining and survey reports, and 9 sheets of maps have been 

 added to the Library. These were acquired as follows : — 



By presentation. — 5 volumes of separate works, 12 

 periodicals (in 145 volumes and parts), 21 pamphlets, 

 4 parts of works, 28 mining reports, and 9 sheets of 

 maps. 



