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190 -NOTES AND QUERIES. [ll s. vu. Min. s, una. _ _», Nevertheless, this same list gives Lawson’s “ Synopsis of all the Data for the Construc- tionorfl Triangles, 4toI;12sé 6d.,” and ag this pam etcontainso y 4pages,a orty- p Ppamphlet might well cost ‘ 3s. 6d.” af: The Mathematieian for July, 1849 (iii. 313), T. S. Davies (a most careful and accurate writer) remarks: “ .... it is less to be regretted that Lawson did not com- 1ete_ his translation than it otherwise might gave been.” But did Lawson ublish anything beyond the fragment described above 1 On £8122 of his ‘ Elementary Treatise on Cross- tio Geometry ’ the Rev. J. J. Milne has the following foot-note :- “ On the outside cover of an Agpendix (1847) to Potts’ larger edition of Eucli there was a notice that i was proposed to publish by sub- scripltion a translation of Simson’s ‘ Restoration of t e Porisms,’ The translation was to be pre- ceded by a discussion of their peculiar character, together with a full developmen of the algebraical method of investigating them." “ If a number of subscribers had been obtained sumcient to defray exgenses it was intended to print the work at the niversity Press in octavo, and to issue it at a price not exceeding ten shillings.” In The Mathemqtician for July, 1849 312), T. S. Davies writes :- “ I am not without the hope that Mr. Potts’ translation of the [Porisms]. . . .with valuable explanatory notes and illustrations, will not be long delayed.” And in The Mathematician for September, 1850- (iii., Supplementary number, 42), occurs this sentence from the pen o T. S. Davies :- “ In the notes on Mr. Potts’ translation of Simson’s Porisms, I shall give a sumciently full account of Mr. Noble’s views. . . .” Was Potts’s trmislation ever published I R. C. Aaomnsnn. Brown University, Providence, Rhode Island. Hsassar S1>1nNos'a’s PATENT.-It will be remembered that in his ‘ Autobiography ’ Herbert Spencer relates that he invented and platented a kind of per-cli which broug t him in, if I rememg); rightlly, about 701. It was soon superseded by a novelt -nowise superior to it~in the same Are any examples of Spencer’s invention still to be met with? Does any corre- spondent happen to possess one ? Hvnmns.. Caiov.-Can any one kindly inform me where I may find a list of those who fou ht at _Crécy (1346), esgmcially of the Welsh knights present, wit details of biography, M- T Gsuono. MLLE. Fmmvvnscr.-Where could I (ind more particulars about this lady 1* She is mentioned in Lady Lyttelton’s letter dated from Windsor Castle 24 Aug., ~1839. She drove out with the Royal party, and sat with Lady Charlotte Dundas and Lady Lyttelton in the same carriage. L. 'L_ K. . iirplizs. r DATE OF ‘BOOK OF HOURS.” . (11 s. los.) Tms appears, without doubt, to be one of the rinted Hora issued by Antoine Vérard, the ublisher, and the copy which your co ngent has is No. 241 112) in Mr. §acfarlane’s monograph on érard, and No. 143 in Brunet. There are vellum co ies in the Bibliotheque Nationale, the Izitz- william Museum (Cambrid8°)» and in the Bodleian. There should be eight leaves without si atures, followed by 114 un- numbered gives. This Horse, believed to be for the use of Chartres, was completed on 21 July, 1508. The device of the pub- lisher, Vérard, is composed of three initials -A. V. R. Your correspondent has not noticed that the V is formed bg' the space between the A and the R. If e will ook again, he will see the V quite clearly. V6- rard’s devicas have been ilklistrated in Silvestre’s ‘ ar ues ap ' ues,’ Nos. 36 and 37; greswe ’s Typo- aphy,’ facing 74 ; and Dibdin’s ‘ Bi °o. Dec.) ii. 26. fore 1489 the device used by Vérard was rough, and had variations; see Picot’s ‘ Cataloaige of the Library of Baron James de thschi1d,’ under the entry of ‘ Les Lunettes des Princes.’ For the sets of initial letters used by Vérard, see Macfarlane’s monograph, p. xxv; and for the origin, &.c., of Vérard’s illustrations to his Horse, see the same work, p. mix and Appendix. For the ttgpw he used, consult Proctor, ‘ Early Prin Books ’ (pp. 603-4). Vérard had a doubtful reputation, and the mutilation or deletion of the colophons to his books (as in your correspondent’s copy) is not unusual. The reasons are not quite clear, but they appear to be connected with a desire to get rid of the date. Vérard’s business of publisher was carried on at various addresses, and when the book which is the subject of this query was issued his house of business was c ose to Notre Dame, where he had moved in September, 1503.
