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split peas of a large size. The internal structure showed a 

 small nucleus, With radial crystals of ice that passed from 

 the centre to the circumference, and, less distinctly, con- 

 centric lines, much resembling the radial and concentric lines 

 often seen in stalactites. The whitish colour that they pos- 

 sessed appeared to be superficial. In the process of melting 

 the surface had a peculiar granular appearance, which may 

 have been caused by the terminals of the radial ice crystals. 

 Some of the larger examples weighed about a quarter of an 

 ounce. 



2. Lenticular and Papillous Forms. — A large number 

 (probably half of the hailstones that fell) were lens-shaped, 

 or biconvex, very symmetrical in outline, and showing a 

 remarkable structure. There was a nucleus of ice that 

 appeared to possess a similar structure to the smooth, 

 spherical forms described as No. 1 variety. This nucleus, 

 which formed about one-fourth of the diameter of the hail- 

 stone, was surrounded by clear and transparent ice that 

 formed a zone of about one-eighth of an inch in diameter ; 

 and the latter was again surrounded by a narrow band of 

 what had the appearance of vesicular ice in a delicate lace- 

 like pattern, while the remainder of the lens (forming the 

 periphery) consisted of clear ice. A curious effect was pro- 

 duced in some cases by the edge of the lens taking the form 

 of a ring of beads, giving it a serrated appearance (pi. xvi., 

 fig. 2). Some examples of this type had a subglobular form, 

 in which case the whole of the surface was covered with 

 coarse tubercles or short, and blunt, spines. Large examples 

 of the lenticular type measured an inch in diameter, and 

 preserved their lenticular outline, while melting, to the last. 



3. Spinous Forms. — These were, perhaps, the most 

 peculiar and striking of the forms observed (pi. xvi., figs. 5 

 and 6). They were mostly of lenticular shape, the nucleus 

 consisting of the usual concentric structure, and rising 

 abruptly from the periphery of the hailstone were promin- 

 ences which tapered towards their extremities, like spines 

 (pi. xvi., fig. 5). In some cases a hailstone carried a few 

 such spines sticking out from the main body at various angles, 

 like the old English weapon of war, known as the "morning 

 star/' which was a wooden ball furnished with iron spikes. 

 (See figures in text.) In a few instances, noticed by others 

 as well as by myself, the spines took a cruciform shape, as 

 shown in pi. xvi., fig. 6. In the example here drawn, one 

 delicate spine, three-quarters of an inch in length, had the 

 appearance of a miniature icicle, with a sharp point, and the 

 broken bases of three other spines, no doubt broken by the 

 fall, were present, the spines being exactly antipodal to each 



