SEGRE ER or 
Miscellaneous Intelligence. 83 
mouth of Chesapeake Bay, under the auspices of the Johns Hopkins 
University, and the charge of Professor Brooks ; and another on 
Salem Neck, between Beverly and Salem Harbor, Massachusetts, 
by J. H. Emerton and C. S. Minot, between June 1 and October 
4; she _< terms $20.00 a a 
thenceum, May 25th. 
Al. Probable Dirtbasios of a Spider by the Trade Winds.— 
Rev. H. C. McCoox states ned = Sarotes venatorius Linn., a 
to Cuba, Florida and Yucatan, Centra America, Seepa and 
California, Sandwich Islands, Loochoo Islands and Japan, and 
thence across Asia and Afric: Liberia, and suggests, in view 
have promoted this distribution. mong the other localities, 
Caledonia, 
before a bathers fet breeze, the ri ing was covered with v ast 
numbers of small spiders ‘with their webs, each, a first coming 
in contact with the ri ging, seated upon a single filament of 
spider web, and so slenderly in some cases that a Saute breath of 
air was found to bear them out of sight. Mr. McCook states that 
the specimens examined by him — no soe whie pra 
not be accounted for “by difference 
in age, or which ma 
come within those ordinary natural re Sage whieh all ethane 
more or less exhibit.” But most of the specimens had lost their 
colors in the alcohol in ape “ie were preserved.— Proc. Acad. 
Nat. Sci. Philad., 1878, p. | 
12. Pol; ymicroscope.——A new ; improvement in the microscope is 
reported from Germany. Herr I. von Lenhossék has constructed 
an apparatus which permits no less than sixty microscopical pre- 
parations being observed in immediate succession, without the 
— of chistiees the slides and readjustment of the object- 
ts construction is similar in principle to that_of the well- 
wn revolving stereosco and the inventor has given the new 
4pparatus the name of “ polymicroscope.”— ature, June 6. 
