I20 THE NORTHERN MICROSCOPIST. 
Institution, on Thursday evening, April 7th, John Boyd, Esq., President, 
in the chair. 
Mr. Thos. Brittain, Vice-President, exhibited the Lichen Verrucaria nitida, 
and the sporidia of the same in ascus. He also exhibited another interesting 
Lichen Graphis elegans with the fruit in ascus. In referring to the two 
species, he exhibited drawings of both which he had prepared to illustrate the 
subject. Mr. Hy. Hall then read his paper on the Anatomy of the Caterpillar. 
The paper was illustrated by many well mounted slides, which were displayed 
on a screen by means of the oxy-hydrogen microscope, cleverly manipulated by 
Mr. John Bathe. This method of illustrating papers on microscopy is worthy 
of consideration, as the ordinary 3 x 1 slides can thus be well shown to a large 
audience. 
Mr. Blackburn called the attention of the members to a collection of beauti- 
fully executed photo-micrographs, which he placed upon the table for inspection. 
They were photographed by Messrs. Baum and Johnson, of Manchester, who 
kindly lent them for the occasion. They represented several departments of 
microscopical study. Amongst them may be particularly mentioned some 
sections of the eye of the Death’s-head moth, showing the ocelli and the 
branches of the optic nerve on a large scale,—beautiful diatoms, especially 
Moller’s ‘‘Typen platte” 400 species on one slide, a symmetrically arranged 
group of 777ceratia, and some of the Pleurosigmata, one of the latter exhibiting 
a portion of a valve of P.formosum very much enlarged by means of one six- 
teenth object glass with F eye-piece. The series forms an excellent contribution 
to the permanent records of microscopy, and a valuable accompaniment to the 
microscopical Cabinet. 
During the conversazione the following objects were shown :— 
Lip pocampus Brevi rostrts  ¢ vsapsrocccssossvosies so.cdeyentephepene ike Mee 
Bratash "MOsses is.i2 ssc. 55 wie ee, dati tones <cnese tote. ee Mr. Stanley. 
Lepidozia reptams ........ Maeaceinsaieo ate cles, objets sens eee a 
UTIOLIG CULT G ix, win of dice IAs ug ea seach eee ae Mr. Sowood. 
Verrucaria nitida sporidia in aScus .........+006ee08 eeees Mr. T. Brittain. 
Sections of Wood double stained ..... .......0.ssecseeeeeeeees Mr. Doherty. 
Sections of Wood infected with Dry-rot, showing me, Mx) Gedo: 
mycelium of the fungus in the cells................4. 
gelavemop hry S01... cei vogeid aasbseicuedies-natvas een ” 
Spiracles and chirping File of common House Cricket, Mr. H. Chadwick, 
Trichina spiralis in Rat’s tongue ..,.. .. - asec) iermeswesigven LES ESIC Lega 
fair of Wat) x cedsoks ceetens vest sinsdseens ose he eee Mr. Mestayer. 
Rotiter, —Cycloglena Wap 15, sess ess. .0..deesene teeenee eee Mr. Jenkins. 
Phantom larva and Cyclops with Vorticelle............ Mr. Thompstone. 
Mr. Alex. Hay, of the Salford Royal Hospital, exhibited a freezing microtome, 
and practically illustrated its use. 
NORTH OF ENGLAND MICROSCOPICAL SOCIETY.—The April 
meeting of this Society was held in the Patents’ Room, Literary and Philo- 
sophical Society, on Wednesday evening last, the 13th inst. Dr. Ellis, one of 
the Vice-Presidents in the chair: there was a good attendance of members and 
visitors. After previous minutes had been read and confirmed, four new members 
were elected and other business completed. Mr. John Brown, sen., then read a 
paper by Mr. H. Pocklington, which had been previously read by that gentle- 
man before the Leeds Chemists’ Association, entitled ‘‘ How to examine plants 
microscopically.” Mr. Brown illustrated this paper with examples of unicellular 
(yeast) and multicellular plants, treated with reagents and so differentiating 
vegetable structure. Mr. Brown was thanked by the meeting for his contribution. 
The chairman (Dr. Ellis) called attention to a remarkable case recorded in the 
“‘Lancet” of the 4th inst., where a boy of 16 died after severe suffering, from 
what would have ordinarily been regarded as Brain disease; a fost mortem 
