85 
Microgaster, a genus of the Ichneumonidoe, singular from their being 
parisitical in the eggs of some of the larger lepidopterous insects. 
Mr. Noble sent for exhibition a fine specimen of a species of Phasmidse 
captured in Assam. 
Mr. A. E. Hudd exhibited Sesia Philantheformis, a new species recently 
captured in the Isle of Man ; also a cocoon of the same in a dead flower- 
head of Armeria Maritima (Sea Pink). Dianthsecia Capsophila, also cap- 
tured in the Isle of Man. Dasycampa Rubiginea taken at Ivy-bloom, at 
Leigh, in October, and Xanthia Gilvago, taken in Derbyshire. 
Mr. Hutchins exhibited the following species captured at Ivy-bloom, 
at Leigh : — Dasycampa Rubigiuea, Xylina Petrificata, X. Semibrunnea, 
and X. Rhizolitha ; also, Iloporina Croceago, a fine species not hitherto 
recorded as occurring in the district. 
The Secretary exhibited a box containing, among other species, 
Sesia Scoliceformis, captured at Llangollen; Sesia Philantheformis, from 
the Isle of Man; Sesia Chrysidiformis, from Folkestone; D. Sicula, cap- 
tured at Leigh ; D. Templi,at Clifton ; L. Putrescehs, from Torquay ; 
Lithostege Nivearia. captured at Brandon, in Suffolk; C. Ocularis, bred. 
The rest of the evening was occupied in examining a number of micro- 
scopic objects, principally scales of British and Foreign species of 
Lepidoptera and Coleoptera, prepared and exhibited by Mr. J. W. Clarke. 
CHEMICAL AND PHOTOGRAPHIC SECTION. 
Wednesday, November 14th.— Rev. W. Whiting in the chair. 
Dr. W. Bird Herapath, F.R.S., &c, read a paper upon Dr. Muspratt's 
new spring at. Harrogate. After referring in general terms to the character 
of the Harrogate waters, the speaker quoted the results of analyses made 
several years ago by Dr. Hofmann, by whom the various springs were 
grouped in four classes. — 1, the strongly sulphurous ; 2, the milder sul- 
phurous ; 3, the saline chalybeate ; and 4, the pure chalybeate. The total 
quantity of solid constituents varied from 11 to 1,096 grains per gallon — ■ 
the chief constituent in excess being common salt, and the quantity of 
sulphide of sodium ranging from 0.3 to 15 grains per gallon. In 1865 Dr. 
Muspratt had analysed the water of one of the four saline chalybeates, 
which same spring had been examined fh 1854 at the same time as the 
others, by Dr. Hofmann, and he found to his surprise, a very remarkable 
alteration in the character of the water; instead of 285 grains solid con- 
stituents there were 465, all the chlorides except that of potassium had in- 
creased, and also the carbonate of iron, while chlorides of lithium and 
barium were present in addition, and were entirely new constituents, as was 
