253 



Mid 



xlvii. 14 



xli. 



& 



Micropegmatitic (?) structure in gabbros 



of Mull, etc., xlii. 72 & pi. vii. 

 Micropertbite in Mullaghderg granite, xliv. 



549. 

 Microplwlis Stowii, gen. & sp. nov., xv. 



642 & pi. xxi. 

 Micropora articulata, sp. nov 



& pi. ii. 



cavata, sp. nov., xxxix. 435. 



coriacea, xlvii. 13 & pi. ii. 



cucullata, xlvii. 15. 



■ hippocrepis, xxxviii. 264. 



lepida, xliii. 51. 



ordinata, sp. nov., xxxix. 435. 



parallela, xlvii. 14 & pi. ii. 



■ patula, sp. nov., xxxvii. 32 



290 & pi. vii. 



perforata, xli. 290. 



polysticha, xlvii. 14 & pi. ii. 



■ var [perforata, sp. nov., xliii. 51 



pi. viii. 

 Microporella cenigmatica, sp. nov., xxxvii. 



331 & pi. xv. 



cellulosa, form Adeona, xxxix. 437. 



ciliata, xxxviii. 266; xliii. 53 ; var., 



xxxviii. 508. 



clavata, xxxvii. 332 & pi. xviii. 



■ coscinopora, var. armata nov., xxxvii. 



331 & pi. xv. ; xxxix. 436 ; var. mucro- 



nata, xli. 295. 

 decorata, xxxviii. 508 & pi. xxii.; 



var. angustipora, xliii. 54. 

 elevata, xxxvii. 330 & pi. xvii. ; 



xxxviii. 267, 508 ; xxxix. 436 ; xli. 296 



& pi. vii. 

 ferrea, sp. nov., xxxvii. 330 & pi. xvii. ; 



xli. 295 ; var. perforata nov., xxxviii. 



267 & pi. vii. 



■ grisea, form Adeona, xli. 294. 



introversa, sp. nov., xxxviii. 268 & 



pi. ix. 

 macropora, xxxviii. 267 & pi. viii. ; 



xliii. 54. 



magna, xli. 295 & pi. vii. 



{Diporula) magnirostris, xli. 296 ; 



xliii. 55. 



• Malusii, xxxix. 437 ; xliii. 54. 



pocilliformis, sp. nov., xli. 295 & 



pi. vii. 

 ■ symmetrica, sp. nov., xxxvii. 332 & 



pi. xviii. ; xxxix. 436 ; xli. 295. 

 violacea, var. fissa, xxxvii. 



pis. xv., xvii. ; xxxviii. 267, 508 



436 ; xli. 295. 

 • yarraensis, sp. nov., xxxvii 



pi. xv. ; xxxviii. 267, 508 ; xxxix. 436. 

 Microscopes [Geol. Soc.J, purchase by 



subscr., xxxvi. Proc. 94 ; & of lamps for 



same, xxxvii. Proc. 10. 

 Microscopic structure of limestones, etc., 



see Limestones, etc. 

 Microscopic study of rocks, history of, xliii. 



Proc. 61. 

 Microsolena, classif. posit, of, xlii. 121. 

 — — excelsa, xxxix. 190 ; xl. 715 ; xli. 



188. 

 — — expansa, xl. 722. 

 — — porosa, xxxviii. 444. 



329 & 

 ; xxxix. 



331 & 



Microsolena regularis, xxxviii. 444 ; xxxix. 



191. 

 spp. (Inf. Oolite), xxxviii. 444 ; 



(RJnetic), xl. 374; (Coral Rag), xl. 722. 

 Microtus (— Arvicola) agrestis, fr. Ight- 



ham lissure, 1. 197. 



amphibius, do., 1. 196. 



arvalis, do., 1. 197. 



Microtus glareolus, fr. Ightham fissure, 



1. 196. 



gregalis, do., 1. 197 & pi. xi. 



ratticeps, do., 1. 197 & pi. xi. 



Microzoic format., Tert., of Trinidad, 



xlviii. 519-541 figs. & map facg. 519. 

 Mid-terrace gravels at Acton, xxviii. 459 



et seqq.; mammal, remains in same, 



xxviii. 466. 

 Middelburg (Cape Colony), section to 



Bloemhof, xl. 661. 

 Middendorfp, A. T. von, *Foss. Fishes 



fr. Siberia, vi. (Part 2) 47-48. 

 Midderidge (Durham), Lepidotosaurus 



Duffii fr., xxvi. 556-564 & pi. xxxviii. ; 



Proterosaurus fr., xxvi. 565-572 & 



pis. xxxix. -xl. ; Dorypterus fr., xxvi. 



623-641 & pis. xlii.-xliii. 

 Middle Bed (Inf. Oolite), xlix. 511. 

 Middle Drift, see 

 Middle Sands & Gravels nr. Blackpool, 



xxv. 410 ; nr. Ulverston, xxv. 421 ; 



elsewhere in Furness, xxv. 422 ; in W. 



Lanes & Cheshire, xxvi. 644, 653 ; line 



of demarcat. betw. Upper Boulder Clay 



and, xxxiii. 735 ; of W. Cheshire etc., 



xxxiv. 383 et seqq. 

 Middlesborough (Yorks), discov. of rock- 

 salt at, xliv. 761 ; chem. anal, of same, 



xliv. 782; boring nr., xliv. 779; vert. 



section facg. xliv. 782. 

 Middlesex, pebble-beds of, xxiv. 464-472 ; 



Westleton Beds in, xlvi. 136. See also 



Acton, Brentford, Ealing, <$f other place- 

 names. 

 Middleton, J., Fluorine in Bones & its 



Applic. to Determ. of Geol. Age of Foss. 



Bones, i. 214-216 w. chem. anal. 



, obituary of, xxxii. Proc. 89. 



Middleton (Derby), 1. 611. 



Middleton Colliery (Yorks), section descr., 



xxxvi. 58. 

 Middleton Fells (Yorks), section to Craven 



Fault, ii. 120 ; do. across Dent & Sed- 



bergh Valleys, ix. 216. 

 Middletown Hill (Shropshire), section 



across, xli. 535 ; do. to Parton Wood, 



xli. 537. 

 Middlewich (Cheshire), brine-springs nr., 



iv. 274. 

 Midford, Cotteswold, & Yeovil Sands, xlv. 



440-474. 

 Midford Sands, so-called, xxxv. 736-743 



figs.; in Dorset, xxxvii. 588; in Bath 



district, xlv. 453 ; abolit. of term prop., 



xlv. 457, 458. 

 Midford Station (Somerset), section descr. 



& fig., xxxv. 737, 738. 

 Midgham (Berks), section in ry. -cutting 



descr., xlviii. 311, 312. 



