Hopkinson] 



936 



[Hopkinson 



On the force an electro-magnet exerts on its armature. 



Electrician, 33, 1894, 100. 



Specific inductive capacities of water, alcohol, etc. 



Phil. Mag., 39, 1895, 134-135. 



The effects of electric currents in iron on its magneti- 

 sation. [1895.] Boy. lust. Proc., 14, 1896, 539-552. 



Inaugural address. [Suggested alterations in the 



teaching of electricity.] [1896.] Inst. Elect. Engin. Jl., 

 25, 1897, 6-25. 



Magnetic properties of iron at high temperatures. 



Boy. Soc. Proc., 61, 1897, 490-491. 



Hopkinson, (Dr.) John, &' Hopkinson, B[ertrairi]. Mag- 

 netic viscosity. Electrician, 29, 1892, 510-512. 



Hopkinson, (Dr.) John, & Hopkinson, Edward. Dynamo- 

 electric machines. Preliminary notice. Boy. Soc. Proc., 

 40, 1886, 326-328. 



Dynamo-electric machinery. [1886.] Phil. Trans., 



177, 1887, 331-358. 



Hopkinson, (Dr.) John, & "Wilson, Ernest. Dynamo- 

 electric machinery. Boy. Soc. Proc., 51, 1892, 49-60. 



Propagation of magnetisation of iron as affected by 



the electric currents in the iron. [1894.] Phil. Trans. 

 (A), 186, 1896, 93-121. 



Propagation of magnetisation in iron. {With dis- 

 cussion.] [1895.] Inst. Elect. Engin. Jl., 24, 1896, 194- 

 213. 



Alternate current dynamo-electric machines. [1895.] 



Phil. Trans. (A), 187, 1897, 229-252. 



On the capacity and residual charge of dielectrics as 



affected by temperature and time. Phil. Trans. (A), 189, 

 1897, 109-135. 



Hopkinson, (Dr.) John, 'Wilson, Ernest, (V Lydall, Francis. 

 Alternate current electrolysis. [1893.] Boy. Soc. Proc., 

 54, 1894, 407-417. 



Hopkinson, John. [Excursions to Badlett, to Hertford 

 and Ware, to Welwyn, to Pinner, to Bickmansworth 

 (twice), to Boxrnoor and Nash Mills, to Totternhoe and 

 Ivinghoe, to St. Albans, to Bickmansworth and Hare- 

 field.] [1884-99.] Geol. Ass. Proc., 8, 1885, 452-458; 

 9, 1887, 182-186, 534-537, 548-550; 10, 1889, 163-166, 

 499-501; 11, 1891, Iviii-lxii, Ixxiv-lxxxi ; 12, 1892, 342- 

 344 ; 16, 1900, 244-246. 



Bemai ks on the land Mollusca, with reference to their 



investigation in Hertfordshire. [1884.] Herts. Nat. 

 Hist. Soc. Trans., 3, 1886, 17-28. 



List of land and fresh-water Mollusca observed in 



Hertfordshire. [1884.] Herts. Nat. Hist. Soc. Trans., 

 3, 1886, 29-32. 



[The neighbourhood of Hertford and Ware.] [1885.] 



Herts. Nat. Hist. Soc. Trans., 3, 1886, Ixv-lxx. 



List of works on the geology of Hertfordshire, 1874- 



83. [1885.] Herts. Nat. Hist. Soc. Trans., 3, 1886, 165- 



172. 



Meteorological observations taken at Wansford House, 



Watford, during the year 1883[-86]. [1885-87.] Herts. 



Nat. Hist. Soc. Trans., 3, 1886, 181-190, 219-226; 4, 



1888, 83-92, 169-175. 



Beport on phenological phenomena observed in Hert- 

 fordshire during the year 1883[-90]. [1885-91.] Herts. 

 Nat. Hist. Soc. Trans., 3, 1886, 191-196, 227-232; 4, 

 1888, 93-96, 176-179; 5, 1890, 177-180; 6, 1892, 114- 

 116. 



An improved form of clinometer. Brit. Ass. Bep 



1886, 557. 



Section from Pinner to Bickmansworth. 



[1886-87.] 

 Herts. Nat. Hist. Soc. Trans., 4, 1888, xxvi-xxvii, xlvii. 



Meteorological observations taken at Watford during 



the year 1877. [1887.] Herts. Nat. Hist. Soc. Trans., 

 4, 1888, 205-208. 



A naturalist's calendar for the south-west of Hertford- 

 shire. [1889.] Herts. Nat. Hist. Soc. Trans., 5, 1890 

 129-133. 

 Notes on birds observed in Hertfordshire during the 



year 1888. [1889.] Herts. Nat. Hist. Soc. Trans., 5, 

 1890, 139-146. 



Beport on the rainfall in Hertfordshire in 1887[-99]. 



[1889-1900.] Herts. Nat. Hist. Soc. Trans., 5, 1890, 

 155-167, 224; 6, 1892, 65-71, 179-186, 204; 7, 1894, 53- 

 61, 203-212; 8, 1896, 33-44, 131-140, vi ; 9, 1898, 109- 

 120, 139-147; 10, 1901, 23-32, 121-128, 213-222, 241. 



Meteorological observations taken at The Grange, 



St. Albans, during the years 1887[-96]. [1889-97.] 

 Herts. Nat. Hist. Soc. Trans., 5, 1890, 187-198 ; 6, 1892, 

 25-30, 169-174 ; 7, 1894, 69-75, 175-181 ; 8, 1896, 57-64, 

 161-168, vi ; 9, 1898, 85-92, 175-182. 



Climatological observations taken in Hertfordshire in 



1887[-96]. [1889-97.] Herts. Nat. Hist. Soc. Trans., 

 5, 1890, 203-212, 224 ; 6, 1892, 77-80, 187-190 ; 7, 1894, 

 157-160, 199-202 ; 8, 1896, 45-48, 125-128 ; 9, 1898, 93- 

 96, 241-244. 



The climate of Scarborough compared with that of 



some other seaside health resorts. Brit. Ass. Bep., 1890, 

 748. 



The inland compared with the maritime climate of 



England and Wales. Brit. Ass. Bep., 1890, 748-749. 



A comparison of the climate of Halifax, Wakefield, 



Bradford, Leeds, and Hull. Brit. Ass. Bep., 1890, 749- 



750. 

 On meteorological photography. Brit. Ass. Bep., 1890, 



751. 

 The river Colne and the swallow-holes at Potterells. 



[1890.] Herts. Nat. Hist. Soc. Trans., 6, 1892, xxix- 



xxxii. 

 On geological photography in Hertfordshire. [1890.] 



Herts. Nat. Hist. Soc. Trans., 6, 1892, 49-52. 

 Temperature and rainfall at Hitchin, 1850-89. [1890.] 



Herts. Nat. Hist. Soc. Trans., 6, 1892, 72-73; 8, 1896, 



204. 

 Hertfordshire plant-records, 1886-89. [1890.] Herts. 



Nat. Hist. Soc. Trans., 6, 1892, 74-75. 



Half-a-century's rainfall in Hertfordshire. [1890.] 



Herts. Nat. Hist. Soc. Trans., 6, 1892, 81-88. 



Water and water-supply, with special reference to the 



supply of London from the Chalk of Hertfordshire. 

 [1891.] Herts. Nat. Hist. Soc. Trans., 6, 1892, 129-161. 



A fire-ball meteor seen in Hertfordshire. [1891.] 



Herts. Nat. Hist. Soc. Trans., 6, 1892, 194-195. 



[Presidential address.] Charles DARWIN. [1893.] 



Herts. Nat. Hist. Soc. Trans., 7, 1894, 101-136. 



The climate of Watford, deduced from meteorological 



observations taken during the ten years 1877-1886. 



[1893.] Herts. Nat. Hist. Soc. Trans., 7, 1894, 219- 



232. 

 The relative advantages of hard and soft water, with 



special reference to the supply of Watford. [1895.] 



Herts. Nat. Hist. Soc. Trans., 8, 1896, 101-115. 

 - The floods of November, 1894, in Hertfordshire. 



[1895.] Herts. Nat. Hist. Soc. Trans., 8, 1896, 141-146. 

 The gale of the 24th of March, 1895, in Hertfordshire. 



[1895.] Herts. Nat. Hist. Soc. Trans., 8, 1896, 19.)-202. 

 Monthly and annual rainfall in the British Empire, 



1877 to 1896. Brit. Ass. Bep., 1897, 564-566. 



Hertfordshire rainfall, percolation and evaporation. 



[1896.] Herts. Nat. Hist. Soc. Trans., 9, 1898, 33-72, vi. 



The climate of St. Albans, deduced from meteoro- 

 logical observations taken during the ten years 1887-96. 

 [1897.] Herts. Nat. Hist. Soc. Trans., 9, 1898, 215- 

 228, vi. 



The rainfall of the south-western counties of England. 



Brit. Ass. Bep., 1898, 799-801. 

 Monthly and annual rainfall in the British Empire, 



1877-96. Meteorol. Soc. Quart. Jl., 24, 1898, 148-160. 

 The rainfall of the south-eastern counties of England. 



Brit. Ass. Bep., 1899, 658-659. 

 The rainfall of the northern counties of England. 



Brit. Ass. Bep., 1900, 652-654. 



