The next No. ws this Journal will be published on the ve of May. 
= id 
CONTENTS. 
Page. 
ie XVII. On a Siecinielo of Native Tron om Liberia. Africa’: ; mca 
by Dr. A. A. Haves, - 158 
XIX. On the Telescopic ees of Beier ae a “iach 
_ Telescope ; by the Rev. W. R. Dawes, = - 
XX. Ona new and advantageous mode of ue Aluminiam >! 
“by. Prof. He Rose, oo 
XXI. “On ‘a ne new. Species of Unio ; by nN “¢ aes <a ; 
/XXDL a on n Binocular Moses by] Professor. Wruast as?’ 
Pe 
die 
oP 
ook ERS, ae : = 
Se So or 
XIII. Absinct of. a, Meieotaleal Joiroal san at Mit 
“same, in | Scr by" Cuartes-Urnam SHEparp, “M.D 
= XXVL. On, the: Theory . wl ich attributes _ the Zodiacal Light io ae 
Ring surrdtin = ‘the Earth ; ees Prof. F. A. pe 
Xxx: Teton on nthe ‘Properties of Telluram 
< De 
oy and Selen- 
ie . aie 
ts = rae 209. —Bblogapby 
. ae 
ea es 
