1888.] 



Presents. 



93 



clear air of Westgate-on-Sea, with a fine 12-inch mirror which 

 has been kindly lent to me by Mr. Common, which have convinced 

 me of the existence of bright carbon flutings in a. Orionis. This is 

 the most crucial observation I have been able to suggest. 



The necessity for the employment of large apertures in the investi- 

 gation is shown by the fact that with Mr. Common's mirror I was 

 totally nnable to see any lines in the spectrum of 7 Cassiopeise except 

 the red line of hydrogen. 



The laboratory researches on the spectra of meteorites are also being 

 continned. I am glad to be permitted to state that the meteorites 

 employed from the commencement of my work are fragments of un- 

 doubted authenticity which have been placed at my disposal by the 

 Trustees of the British Museum, and my best thanks are due to that 

 body, 



T have also to thank Professor Flower and Mr. Fletcher, the official 

 in charge of the Mineral Department, for their kindness in giving me 

 special facilities for studying our national collections. 



Finally, as before, I have to thank my assistants, Messrs. Fowler, 

 Taylor, and Richards for the manner in which they have helped me 

 throughout these inquiries. Their intelligent and unflagging zeal 

 have rendered me greatly their debtor. 



I also wish to thank Mr. Collings for the care with which the illus- 

 trations have been prepared. 



Presents, April 12, 1888. 



Transactions. 



Adelaide :— Royal Society of South Australia. Transactions and 

 Proceedings and Report. Yol. IX. 8vo. Adelaide 1887. 



The Society. 



Cambridge, Mass. : — Harvard College. Museum of Comparative 

 Zoology. Memoirs. Yol. XY. 4to. Cambridge 1887. 



The Museum. 



Chapel Hill, N.C. : — Elisha Mitchell Scientific Society. Journal. 

 Yol. IY. Parts 1-2. 8vo. Chapel Hill 1887 . 



The Society. 



Delft : — Ecole Polytechnique. Annales. Tome III. Livr. 4. 4to. 

 Leide 1888. The School. 



Dijon : — Academie des Sciences, Arts et Belles-Lettres. Biblio- 

 graphic Bourguignonne. Supplement. 8vo. Dijon 1888. 



The Academy. 



Frankfurt-am -Oder : — Naturvvissenschaftlicher Yerein. Monatliche 

 Mittheilungen aus dem Gesaramtgebiete der Naturwissen- 

 schaften. Jahrg. Y. Nr. 9-10. 8vo. [Frankfurt] 1687-S; 



