152 Scientific Intelligence. 



Papers, vol. 7, (1) Director's Report for 1918 (pp. 1-12); 

 (2) The Languages of the Pacific, by J. M. Brown (15-29) ; (3) 

 New Hawaiian Plants, VII, by C. N. Forbes (33-39) ; (4) A New 

 Cyanea from Lanai, Hawaii, by C. N. Forbes and G. C. Munro 

 (43) ; (5) Notes on Marsilea villosa Kaulf, by C. N. Forbes (47- 

 49) ; (6) a New Variety of Partulina homeri, by J. J. and 

 A. Gouveia (53) ; (7) New Species of Sierola with Explanatory 

 Notes by D. T. Fullaway (57-158) ; (8) Director's Report for 

 1919 (163-176) ; (9) Edible Mollusca of the Oregon Coast, by 

 C. H. Edmondson (179-201) ; (10) Fish Poisoning in the 

 Hawaiian Islands, by J. F. G. Stokes (219-232) ; (11) An 

 Archaeological Survey of Haleakala, by K. P. Emory (237-259) ; 

 vol. 8, (1) Report of the Director for 1920 (3-28). In the series 

 of Memoirs: vol. I, (1) A Monographic Study of the Genus 

 Pritchardia, by 0. Beccari and J. F. Rock (77 pp., 23 pis.) ; (2) 

 A Contribution to Samoan Somatology, by L. R. Sullivan (17 pp., 



7 p 1s -)- . 



6. Mikroskopische Physiographie der Miner alien und Ges- 

 teine; by H. Rosenbusch. Band 1, Erste Halfte : Die 

 Petrographische wichtigen Mineralien und die Methoden ihrer 

 Uniersuchung. Fifth edition, fully revised by E. A. Wulfing. 

 First installment, 252 pages, with 192 text figures and one colored 

 plate (an interference chart). Stuttgart, 1921 (E. Schweizer- 

 bart'sche Verlagsbuchhandlung). — From the preface we learn 

 that the new edition of the Physiographie, whose appearance has 

 been delayed by the war, is practically a new work, so great has 

 been the addition, selection, and reworking of the material. In 

 order to make room for the large amount of matter available and 

 to keep the new edition from growing unwieldy, some matter that 

 appeared in the previous edition has been omitted, such as the 

 treatment of stereographic projections, some of the graphical 

 methods, and certain demonstrations in geometric optics. 



Following the Introduction, which is shortened and much 

 changed from that in the fourth edition, is a section on methods 

 of preparing material for optical examination, the main portion 

 of which is, of course, devoted to describing the methods of 

 making of thin sections. Incidentally, Wulfing shows that he 

 does not view with sympathy the substitution of kollolith for the 

 time-honored Canada balsam ! The new position of this section 

 in the book is obviously an improvement over that in the old 

 edition, where it was inserted in the midst of the theory of optics. 



Much new material appears in the book. Some of this may 

 be briefly mentioned. There is an interesting computation on the 

 requisite size (or number) of thin sections necessary to obtain 

 certain definitely oriented sections of a mineral, say a basal sec- 

 tion of a uniaxial mineral or a section cut parallel to the c-axis. 

 The treatment of the dispersion of birefringence is newly added 

 material. 



