On Infusoria in Dust-showers and Blood-rain. « 377 
2. Phytolitharia. 
66, 67, Amphidiscus truncatus. 89 Lithostyldium Clepsammideum. 
us. 90 —+ crenat 
[ 69-71 Lithodontium fureatum. 91 — Ossiculum. 
5 Scorpius. 92 — Amphiodon. 
| 73, 74 — __ rostratum. 93 a Terebra. 
. 75-77 a ur 94 ae angulatum. 
‘ 78 — los 5 — rude. 
| id ie a m. 96,97 —— denticulatum. 
: eee 98 —— Emblema. 
1 ape amma clay 9 — irregular 
i erra, 100 Lithomesites ornatus. 
© 82 b, —— _ Taurus. 101 Lithostylidium triceros. 
8-85 — curvatum, 102 — calcaratum, 
a —_— biconcavum. 103 — spiriferum. 
: 87 Clepsammideum, | 104 —— leve. 
88 Lithospheridium irregulare. 
In this shower, the organic forms make up about one-eighth 
of the mass. In general character including color, there is a close 
resemblance to the products of the Atlantic showers and the others 
above described. ‘The species are nearly all of fresh-water or land 
origin; one-seventh only are marine species. The most abund- 
E. longicornis, Gallionella decussata, G. granulata, an G. pro- 
cera ; and those of Phytelithari, Lithostylidium amphiodon, L. 
ossiculum and rs ru 
There are two Sonth see ne! species, the Hunotia Pileus. 
and Himantidium Zyg 
The number of species brought to light. aie the dust of the 
‘nine showers thus far described, is as follow 
Polygastrica 57. Phytolitharia 46. Poipttalad a 8. 
Besides these, there are seven kinds of particles ‘ons plants, and 
one fragment of an insect. Seventeen of the species are marine, 
and the other 102 of fresh-water origin. ‘There is no evidence of 
voleanic origin. 
Second specimen from the Genoa shower of the 16th of 
May, 1846.—All but one of the oer mentioned were observed 
dus 
VIL Storm of red snow in Puster Valley in Tyrol, March 31, 
847.—Thi lor to a colored dust, ‘much 
22 
of which were Pubs acai we ibe ten 2 Polythalamia, 
particles of plants, and 1 of an e he 
n 
dnt a Sirelacdeent (?) There isa remarkable resemblance 
he col 
aa 
tees x 
a.” 
to. that of the Atlantic, Genoa es 
