334 Notice of Dr. Hooker’s Flora of New Zealand. 
e. Qualitative sige bi made on a very ep sai gave 
Baiteatinbs of lime, magnesia, water and oxalic acid. 
Jf. Quantitative analysis made on 3°83 grs. : 
Carbonate of lime, sae = 
Water, nee eins { L 21055 
Carbonic oxyd, a 002) which ecm and Magness 822 {21 ur 
Daheanee of soda } corresponds + Oxalic a 28-017 
and magnesia in 1-400 to Fe ge . - 49°155 
aeaity equal 
quantities, 
: “99-049 9-04 
g. Uniting the soda and magnesia with the lime to calculate 
the formula, we get, 
Atom. 
Lime, to sa 21877 = Cee 
Oxalic acid, - a 98-017 = 622=1 
Water, - - - 49-155 = 4369 =7 
which gives 2 oe CaO, C:O:, 7HO; being an oxalate 
of lime with 7 atoms of water instead of one; or more probably 
oxalate of lime ith 6 atoms of water of crystallization, thus 
aO, C20s, HO+6HO; or 6a 67H 
h. The great interest of the mineral lies in the fact of the wa- 
ter of crystallization, rendering oxalate of lime dimorphous, the 
Whewellite of Brooke being oblique. 
It is curious that the specific gravity of Conistonite should be 
greater than Whewellite; we should have expected that the addi- 
tional HO would have lowered the gravity.” 
Art. XXXVI. — Introductory Essay, in Dr. Hooker’s Flora f 
New Zealand. 
(Concluded from p. 252.) 
Hysripization has been supposed by Any to be an important 
element in confusing and masking species. Botanists of one 
class are apt to refer to its agency the tii na 2 appearance 0 
a specimen which combines two nominal species, founded on 1n- 
constant characters. Another class of naturalists appeal to the 
Spores occurrence of fertile hybrids, to negative the eel 
ise unavoidable, that the production between two 
tale of inherently fertile offspring, is a good reasop for rae 4 
cing them identical in species. Any continued effects from hy or 
— in Broa uallen nature seem to be thoroughly jit iy 
ways; first by the constitutional debility if Pe é 
the variable sterility of the hybrid gy ge one it of 
uration ; and secondly, By the fact that, when prot 
