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DIARY OF SOCIETIES. 
TUESDAY, Apriv 14. 
Rovat ANTHROPOLOGICAL INSTITUTE, at 8.15.—Some Hopi Textiles from 
the Pueblo of Hano: Miss B. F. Marreco. 
WEDNESDAY, Apri 15. 
Roya METEOROLOGICAL SocIETY, at 7-30.— 
AERONAUTICAL SOCIETY, at 8.30. —The Value of Ballconing as a Training 
for Flying: G. Brewer and Major E. M. Maitland. 
Royat Microscopicat Society, at 8.—The Insect Pests of Wheat Crops : 
F. Enock. 
NO. 2319, VOL. 93] 
NATURE 
[APRIL 9, 1914 
THURSDAY, Apri 16. 
ConcRETE INSTITUTE, at 7.30.—The Design of Steel and Reinforced 
Concrete Pillars with special reference to Secondary and Accidental 
Stresses ; O. Faber. 
INSTITUTION oF MINING AND METALLURGY, at 8. 
FRIDAY, Aprit 17. 
MALACOLOGICAL Society, at 8.—Notes on Australian Mactride: E. A. 
Smith.—On the Generic name Martensia, Semper: Some more notes om 
Polyplacophora, part I.:  T. Iredale.—Description of a new recent 
Pholadomya from Tasmania: C. Hedley and W. L. May.—Description 
of a New Helicoid from South Australia: G. K. Grude. 
| Juntor INSTITUTION OF ENGINEERS, at 8.—A Few Typical Carburetters : 
aise 1D 
Ox. 
SATURDAY, Apri 18. 
AssociaTION OF Economic Broxocists (at Royal College of Science), at 
ro a.m.—The Organism cf Common Potato Scab. (Actinonzyces scabies. 
(Thaxter) Giissow): H. T. Giissow.—Potato Diseases: A. orne.— 
Insects causing Blotch on Potato Follaage: A. S. Horne and H. M. 
Lefroy.—Standard Fungicides and Insecticides : A. G. L. Rogers. —Obser- 
vations on Aphis rumicis: J. Davidson.—The Golf Green Fly: A. W. 
Westrop.—Observation on the Winter Stage of the American Gooseberry 
Mildew. (Sphaevotheca mors-Uvae): K.S. Salmon.—The Darkening of 
Oak: P. Groom.—The Phytopathological Conference: A. G. L. Rogers. 
—Apple and Pear Sucker: P. R. AwatiictAn Experiment in House 
Fumigation: H. M. Lefroy.—Life-history and Habits of Aleurodes 
vaporariorum: EK. Hargreaves. 
CONTENTS. PAGE 
A Vocabulary of Embryology. By D. W.T... . 131 
Rubber and Rubber eeaess ae H.W. 132 
Water Supplies . : 133 
Our Bookshelf ris 133 
Letters to the Editor :— 
The Funafuti Boring.—Dr. F. Wood-Jones ; Prof. 
J. W. Judd, C.B., Rak Shae. 135 
Zoological Classification. —H. Chas. Williamson 135 
The Dublin Gorilla, (//dustrated.)—Prof. G. H. 
Carpenter 136 
ee Chee -fractions. —Prof.G. 'B. Mathews, 
F.R.S. 136 
New Units in ‘Acrology. —Prof. Bohuslav Brauner 136 
Wineland the Good . 136 
The Imperial Bacteriological Laboratory, Muktesar, 
India. By Dr. Percival Hartley. . . 137 
Prot. ba , oer F.R.S. By Sir Oliver if 
Lodge, F.R.S. . : 138 | 
Notes See 
Our Astronomical Column :— 
Comet 1914a (Kritzinger) 144 
MibesNew Solari Cycley 3 eee mane han: ence 144 
Relation between Stellar epoca, Colours, and 
Parallaxes S12 owt eee Pee Bost 
Series Lines in Spark Spectra. By Prof. A. Fowler, 
F.R.S. : Stoke: SHmO \) » 145 
Practical Education in Secondary Schools, Trade 
Schools, and Central Schools. By J. Wilson 146 
The Institution of Naval Architects .. LAs 
Papers on Invertebrates. (///ustrated.) By Row 149 
Meteorological Reports . 14G 
Improvements in Long- Distance Telephony — 
Prot ean Hleming., HoRiSs se . 150 
University and Educational Intelligence . 153 
Societies and Academies Aoi fata) hy Aes age 
Booksmkeceived ., | Ave er eben re) te neat mS 
Diary of Societies . hee a eta 
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