258 Scientific Intelligence. 
(13.) Meconin, aren with an excess of hydrochloric or hydri- 
odie acid, yields methyl chlorid or iodid, and a body derived trom 
meconin by vindthoing €H, by H, methyl normeconin : 
4 (phy (Oy 4+HCI=€H, Cl+©,H,6,. 
Experiments to # Sowa the hypothetical normeconin by substitu- 
ting H, for (CH,)., gave nothing capable of being isolated in a 
pure state. 
(14.) Hemipinic acid ti oes with various reducing agents, 
was in no case reduc ed t opiani cid or meconi xperi- 
ments to htain’ opianic aciil from ‘the. union of hemipinie acid and 
meconin, have yielded no isi Moreover, hemipinic acid could 
not be oxydized to any other 
et ) Heated with an excess of hydrochloric acid, hemipinic acid 
yields, beside methyl chlorid and carbon dioxyd, a new acid, me- 
thyl-hypogallic ac cid: 
1oH,,0,+HCI= €H,Cl4+€0,+€,0,0 
Heated with hydriodic acid, it affords methyl iodid, exten dioxyd 
and 9 |. Rise acid: 
8,+2HI—2€H, nat AAT o.. 
(16.) An Hos 8 observations proving hemipinic ce to be di- 
pete are confirmed, the anhydrid being obtained by simple dry- 
ws €,,H,,9,=H,0+€,,H;0,- 
ay ig Lak ieee acid is also dibasic 
(17.) Hemipinic acid may crystallize with various quantities of 
crystal water; crystals having been obtained with $, with 1, and 
with 2 molecules of such water. 
(18.) All the eenebioaie of narcotine and of its decomposition 
products, are explained in a satisfactory manner by assuming for 
it the following rational formula: 
eH. 
(€, ,H,0,)” tes 
(€,H,98)'" +} 8 
(€H,),H 1 e, 
~Aan. Ch. Pharm., Suppl. Band vii, 66, Nov., 1869.  «G. F. B. 
On the size of Molecules ; by Sir Wu. Tuomson. (Proce. Lit. 
ia Phil. Soe. Manchester, Mare 22; Nature, May 19 
es h 
3 
s es 
about the first year of my f Bispersion ag I have taught my students 
that Cauchy’s theory of roves heterogeneousness, or 
molee structure, to beco ‘bl in contiguous portions s of 
glass or water, of dimensions , modlexstely small in ie gerbe with 
the wave-lengths of o egg a light. Ihave spoken to you also, I 
think, of the argument deducible from the contact electricity ‘of 
metals. This, I now find, proves a limit to the dimensions of ‘the 
