CONTENTS. 



PAGE 



I. On certain Substances obtained from Turmeric. — II. Cur- 

 cumin. By C. LoRiNG Jackson and A. E. Menke . 1 



n. Observations of the Transit of Venus, December 5 and 6, 

 1882, 7nade at the Harvard College Observatory. By Ed- 

 ward C. PiCKERlMG 15 



ni. On certain substituted Acrylic and Propionic Acids. By C. 



F. Mabery and F. C. Robinson 41 



IV. On the Products of the Dry Distillation of Wood at low Tem- 

 peratures. By Charles F. Mabery 47 



V. A simple method of Correcting the Weight of a body for the 

 buoyancy of the Atmosphere ivhen the Volum-j is unknown. 

 By JosiAH Parsons Cooke 55 



VI. On the Vapor Density of the Chloride, the Bromide, and the 

 Iodide of Antimony. By C. P. Worcester, A. B., 

 Harv., 1883 61 



VII. Notes on some Species in the third and eleventh centuries of 



Ellis's North American Fungi. By W. G, Farlow . . 65 



VIII. On certain Parabrombenzyl Compounds. By C. Lorxng 



Jackson and G. T. Hartshorn 86 



IX. A new method of preparing Borneol from Camphor. By C. 



LoRiNG Jackson and A. E. Menke 93 



