f Continued /rum ^h%Q€ •*»" of I'uvrr* ) 



yOLUME 13. 



1. Morse. H. W. - Btndies on Fluorite iv The Kathode-Luminescence of Fluorite. pp.1 



1 pi. June, r.<07. 36c, 



2. (iur.KNM is. .i. M I i New Species of Seneeio and * : n iBoan 



11. I. New or otherwise Noteworthy Biierinntopliytt's, chiefly from Mt-xiro; Ill I 



ii. 1... and Bartlbxt, m h We« Plants from Gautemala and Mexi< 

 chiefly by C. C. Dean; .IV. i Kkrnw.k M L. - Diagnoses of New Spermato| 

 New Mexico, pp. 17-08. Jinn-, I'.hit JiOc. 

 M \hk. K I. , ami C"I'ki.and, M. — Maturation Btages in the Bpermatogeni 

 lata Linn. pp. 69-74, June, 1907. IBo, 

 i. itK.i.i.. L. — The Physiological Basis o( Illumination, pp. 76-96. Beptembei 

 5. Peiuce, B. O. — On the Determination of the Magnetic Behavior ■•! the Finely Divide 



lectromagnet while a Steady Cuirenl is being B tablished in the Exciting CoJL pp 

 97-182. September, 1907. $1.20. 

 r>. Bbvddeicaokr, C. L. B. — The Demagnetizing lindrical Iron Rods, pp - 



September, 1907. $1.16. 



7. Lewis, G.N. — Outlines of a New Bystem of Thermodynamic Chemistry, pp 



1907. i 



8. Sanger, C. R., and Black, O. F. — The Quantitative Determination of Arsenic by ti. 



Method, pp. 296-324. 2pl. October, 1907. i<>,-. 



9. Bangui, C. B., and Black, (». K. The Determination of Arsenic in Urine, pp. 



tober, 1907. 26c, 



