Bulletin of the AT Museum of Comparative Zoology HARVARD COLLEGE No Vol LV GEOLOGICAL SERIES Vol IX, No HARVARD SEISMOGRAPHIC STATION THIRD ANNUAL REPORT FOR THE YEAR, AUGUST, By 1910 J B — 31 JULY, 1911 Woodworth CAMBRIDGE, MASS., U S A.: PRINTED FOR THE MUSEUM February, 1912 No — Harvard Seismographic Station August, 1910 the year, By The list of J — 31 Third Annual Report for July, 1911 Woodworth B earthquakes and seismic disturbances of the ensuing table continues that published in the Curator's Report M C Z., 1909The numbers correspond to entries in the Record 1910, p 28-33 Earthquakes kept at the Station from the beginning in 1908 For the times heretofore given in Eastern Standard Time of the 75th meridian west from Greenwich, the Greenwich Mean Time, from midnight to midnight, has been substituted and the data have been cast in the form of a monthly bulletin instituted during the The adjoined short table will facilitate the conversion of Greenyear wich Mean Time into that locally used E S T hours between noon and midnight are in italics For the G M T hours in italics, read of the 75th meridian date as one day earlier G M T 75° T G M T 75° T / 8 10 11 12 16 17 18 19 22 12 20 21 11 23 7=7 The Gottingen system of nomenclature or symbols has also been adopted in place of the less readily written system of Laska heretofore mainly employed in the reports This system is as follows: — P S L M C F i e A first preliminary tremors or longitudinal waves beginning of 2nd preliminary tremors or transverse waves beginning of long waves, main waves, or principal portion time of maximum motion among the long waves beginning of coda or trailers (seldom read) end of visible motion beginning of impetus, initial motion well observed emersion, evident belated beginning of record amplitude of the maximum motion With undamped pendulums with damped pendulums in micra (/*) stands for the north-south component of motion registered by the horizontal pendulum lying in the prime vertical (east-west) stands for the east-west component of motion recorded by the pendulum lying in the meridian (north-south) usually given in millimeters; N E bulletin: museum of comparative zoology Under the column of Remarks in the accompanying tables the folQ, (quake), for earthquake Qf, a lowing abbreviations appear: felt earthquake, the name of the place following indicating the approxi- — mate origin of the shock Ql, a local shock Qr, earthquake reported Dp, distance from Cambridge as indicated by the pendulums Dm, distance from Cambridge measured on a Micros., masked by microseisms globe O, origin or epicentre Latitude 42° 22' 56" N., Longitude 71° 06' 59" W Greenwich; Altitude 5.367 M Time: Mean Greenwich, midnight to midnight Instruments: Two Bosch-Omori horizontal pendulums (mechanical registration) No woodworth: harvard seismographic station bulletin: museum of comparative zoology woodworth: harvard seismographic station bulletin: museum of comparative zoology woodworth: harvard seismographic station 10 bulletin: museum of comparative zoology PLATE Raymond — Invertebrate Fossils PLATE Figs so as to 1, 2 Ethmophyllwnceratodictyoides Raymond The holotype, broken One third less than natural filling the inner cavity show the limestone size Fig Spirocyathus constrictus than natural Raymond The holotype One third less size Fig Thamnobeatricea parallela Raymond one of the branches of the holotype X 2f A longitudinal thin section of Figs 5, The same species Two fragments of branches, showing the ornamentation of the surface Paratypes, M C Z nos 9304, 9305 Xl| The same species A diagram taken from a fragment showing branchThe specimen was ground down to the axial region A paratype, M C Z Fig ing no 9303 Natural size Fig The same species A thin section through a stem at the place of is the base of the branch branching Note the cystose tissue at the right, which Thin section M C Z no 127 X Z\ Fig The same species The holotype One Photographs by George Nelson third less than natural size BULL MUS COMP ZOOL I i Raymond Invertebrate Fossils Plate PLATE Raymond — Invertebrate Fossils PLATE Fig Cladophrag?nus bifurcatus Raymond An unbranched specimen, showing the small pustules on the surface M.C.Z no 9308 X 1£ Fig The same and the convex Fig species septa X A thin section, showing the nature of outer wall, The same species A drawing from a sliced specimen showing method M C Z no 9306 Natural size of branching Fig The same species A photograph of a small piece of limestone, showing several naturally weathered longitudinal sections M C Z no 9307 About natural size Fig Beatricea gracilis Foerste A transverse section of a specimen from Dickey, near Mercersberg, Pa., showing the inner part of the zone of cystose tissue Thin section M C Z no 129 X Fig The same species Weathered specimens on a piece of limestone from The longer one shows the pustules of the surface M C Z no Dickey, Pa 9310 X Fig sections One 1| The same species A piece From Blue Spring, south of limestone showing naturally weathered of Mercersberg, Pa M C Z no 9309 third less than natural size Fig Cryptophragmus anliquatus Raymond A transverse section of a specimen from the Carlin formation at Loysburg, Pa., showing the great development of radially arranged tissue about the cystose zone R M Field, collector Thin section no 368 Specimen M C Z no 9311 X 2J Photographs by George Nelson BULL MUS COMP ZOOL RAYMONO INVERTE8RATE FOSSILS W*£ PLATE PLATE — Invertebrate Raymond Fossils PLATE (Emmons) The best preserved trail in the colColby College Note the terminal impression at the left near the top the picture A little less than one half natural size Fig Phyllodocites jacksoni lection at of A transverse thin section across several small and one large burrow Fig of the kind called Phytopsis tubulosum Note the numerous grains of quartz sand which show as light specks in the dark lining of the tube The larger light areas are calcite Phyllodocites pugnus (Emmons) The best preserved trail in the colColby College About § natural size Fig A weathered layer of "Birdseye" limestone, about 4£ inches thick It shows the way in which the tubes cross one another, and the dark material which lines the burrows Fig lection at Fig Reteocrinus elongatus Raymond The holotype, with proximal portion of the column Five sevenths of natural size Fig Houghtonites gracilis (Walcott) Fig Petaloptyon danei Raymond The genotype The holotype Photographs by George Nelson and H C Stetson X X 3|- BULL MUS COMP ZOOL \&&i Raymond Invertebrate Fossils Plate PLATE Raymond — Invertebrate Fossils PLATE Fig Dalmanites townsendae Raymond of a pygidium Natural size The holotype, which is a natural mold Fig Isotelus giganteus Raymond The hypostoma, which is the holotype of the specimen represents a mold of the lower surface, but the prongs are natural casts of the interior The white border about the prongs The greater part indicates the thickness of the shell Natural size Photographs by George Nelson BULL MUS COMP ZOOL Raymond Invertebrate Fossils Plate ... bulletin: museum of comparative zoology woodworth: harvard seismographic station 8 bulletin: museum of comparative zoology woodworth: harvard seismographic station 10 bulletin: museum of comparative. .. at the other bulletin: museum of comparative zoology 18 The earthquake the shores of Issik of January, 1911, which was destructive about Kul in Turkestan, was of the highest order of in- prompt... Micros., microseisms mask 28 No bulletin: museum of comparative zoology woodworth: harvard seismographic station No 29 30 No bulletin: musel.m of comparative zoology Date 1911 163 Oct, 20 164