133 
PROCEEDINGS OF THE PERTHSHIRE SOCIETY’ OF NATURAL SCIENCE. 
expense of the materials employed in its construction did 
not exceed 15s, yet the intsrument carried magnifying 
powers of 150, 250, and 350 times with perfect distinctness. 
In the centre of the Hall, a great variety of telegraph 
apparatus was exhibited in working order by Mr Mac- 
gregor, postmaster, and Mr Gaudie. These consisted of 
the Morse printing duplex telegraph and sounder, single 
needle, ABC, Breguet’s French alphabetical instrument, 
electrical repeater for railway signalling, a number of 
specimens of submarine cables, and other instruments con¬ 
nected with telegraphy. At the end of the table a neat 
miniature telegraph pole was fixed for carrying the four 
wires overhead to a distant room, where other sets of the 
same apparatus were joined up and worked by assistants. 
Messages were exchanged between the two rooms. 
In another part of the hall, a practical exhibition of 
glass-blowing and engraving was given by Mr Motherwell 
and Mr Craigie, Glasgow. 
On one of the tables was a large collection of colouring 
matters used in dyeing, chemicals, &c., lent by Mr Rufus 
D. Pullar. These included an interesting collection from 
one of the great coal-tar works in Germany, illustrating 
the manufacture of coal-tar colours and artificial alizarine 
by samples of all the various raw, intermediate, and 
finished products. A varied collection of dyewood extracts, 
and of gums used in printing and finishing, was given by a 
well-known Glasgow firm; and a Leeds firm also sent a 
number of samples of orchella lichens and indig oes. 
Several specimens of woods were also exhibited, including 
logwood from the Honduras and Jamaica; sunderwood from 
the East Indies; fustic, from Cuba and Jamaica; camwood 
and barwood, from the Gaboon River, Africa; and peach- 
wood, campeachy, and limawood, from South America. 
Mr Alex. Bain, County Assessor, lent a valuable collec¬ 
tion of manuscripts on vellum, rare bindings, and early 
printed editions of the Scriptures. Among others, there 
were a 13th century copy of the Bible, beautifully written 
on 500 leaves of the thinnest vellum, and a Book of Hours, 
written on vellum, with 14 miniatures painted in gold and 
colours—the manuscript being as fresh as when it left the 
illuminator’s hands 400 years ago. On a table adjoining 
this was a collection of specimens illustrative of the manu¬ 
facture of pottery. 
In a room adjoining the Working Boys’ and Girls’ Hall 
was a collection of 25 models working by electricity 
and steam, consisting of high-pressure beam-engines (with 
boiler complete) working a powerloom for jute weaving; 
horizontal condensing engines, fitted with reversing gear; 
two small beam engines (one standing in 2 inches by 3, 
made by Mr Chrystal, St John’s Foundry, Perth); and a 
small locomotive, with reversing gear. These were all 
worked by steam. Those worked by electricity consisted 
of an electro motor engine and an electric pump engine. 
This department was under the charge of Mr A. E. Pullar. 
In three rooms—one each in the Museum, the Boys’ and 
Girls’ Hall, and the Gymnasium—were shown examples of 
telephonic exchange, fitted up by Messrs Westwood Sons 
& Miller, bellhangers, Princes Street. The phonograph 
was also exhibited in one of the rooms of the Boys’ and 
Girls’ Hall, under the charge of Mr Mathieson, Dundee. 
The Museum was lit up with thirty 20-candle-power 
incandescent lamps, which gave a clear and cool light; 
and the lobby connecting the Boys’ and Girls’ Hall with 
the Society’s Rooms was also lit up with incandescent 
lamps. Outside the building, at the comer of Canal Street 
and Tay Street, was one of Siemens’ arc lamps, of 3000 
candle-power. 
Mr George Grieve and Mr W. Ellison had charge of the 
lime-light exhibitions; Mr S. T. Ellison, of the electric 
light; and Mr Campbell, of the microscopes and physical 
apparatus. 
The programmes of Friday and Saturday evenings were 
similar to that of Thursday, with the exception that in 
place of the opening address by Professor Geikie, addresses 
were given by Mr F. W. Young, F.C.S., F.R.S.E., 
Dundee, on the Spectroscope and its uses (illustrated by 
experiments), and by Mr Patrick Geddes, on the Study of 
Biology. 
During each evening Messrs Pullars’ reed band played 
selections at intervals. 
January 10th, 1884. 
S. T. Ellison, Esq., Vice-President, in the Chair. 
NEW MEMBERS. 
The following were elected:—Miss Phillips, Tay Street; 
Mr John Wilson, High Street; MrR, P. Ramage, British 
Linen Bank; Mr Alexander Drysdale, General Prison; and 
Colonel Campbell, Governor of the General Prison. 
The following were nominated for election at next meet¬ 
ing:—Dean of Guild M‘Arthur; Mr James Ogilvie, Blair¬ 
gowrie; Mr J. Thomson, Dundee; Mr D. J. Keay, Perth; 
Mr J. A, Robertson, Perth; Mr D. N. Shaw; Mr D. 
