Viro Inclyto ac de Republica Literaria Meritissimo D. C. Morton, Med. Doct. Societati Regiae Scientiarum Londinesi ab Actis S. P. D. Joannes Lulofs

texture, even after death, more tender than the rest. The other viscera had not the least change of their colour, but exhibited a sound and natural appearance. Another child, which I saw, was seized with a dysentery, attended with a very ardent fever; which, notwithstanding my utmost endeavours to relieve it, carried off the poor infant on the third day. Several, almost the whole, of this child's discharges by stool were nothing but blood. Upon opening the body after death, the whole of the intestines were in a very great degree inflamed, and of an intensely deep red colour, and the contents of the abdomen were inexpressibly fetid. Throughout the whole course of the disease, keeping the patient moderately warm and promoting his perspiration, was of great importance; and the not sufficiently attending to this, I more than once saw followed by fatal effects. CVI. Viro inclyto ac de Republica Literaria meritissimo D. C. Morton, Med. Doct. Societati Regiae Scientiarum Londinensi ab Actis S. P. D. Joannes Lulofs. Read Dec. 4, 1762. NISI morbo sic satis diuturno fuisset retentus, dudum, Vir spectatissime, ad te dedisset literas, gratias acturus, quod me quoque illustri societatis Regiae Praesidi ac reliquis ejusdem inembris ita commendare volueris, ut, quantum mihi ex literis quibusdam ex Anglia nislis constitit, inter societatis membra numerari mihi contingat: id omni verum contentione me facturum promitto, ut eo nomine haud indignus penitus haberi queam. Licet autem Patriae Fluvi, quorum cura mihi a summis Imperantibus est commissa, multum istius temporis, quod olim astronomiae ac coelestibus observationibus dare solebam, mihi eripiant, attamen ita Uraniae amor imis medullis est infixus, ut saltem notabiliora coeli phænomena observare nunquam intermittam: ideoque non ingratum fore tibi, Regiaeque Societati confido, si hisce inseram brevem observationum recensionem, quas circa utramque Lunae, ut et circa Solis eclipsin, quae hocce anno contigerunt in nostro observatorio habui. Observatio deliquii Lunaris 8 Maii 1762. Tempore vero - II. 32 46 { Penumbra admodum densa in Lunae difco apparebat. 34 26 Penumbra densa ad Keplerum. 36 41 Umbra aliquantum dubia ad Keplerum 41 21 Umbra ad Grimaldum. 44 16 Grimaldus totus in umbra. 51 6 Umbra ad Platonem. 51 52 —— ad Copernicum. III. 2 18 Digiti obscurati —— 4, 93 6 56 Umbra ad Manilium 13 6 Digiti obscurati —— 6, 47 23 49 —— —— 7, 56 34 34 Mare Crisium totum in umbra. 43 38 Umbra ad Tychonem. 50 56 Tycho tantum non totus in umbra. Post horam III. 51' 0'' Luna nimium accedebat ad horizontem, ita ut propter vapores, prope eundem hærentes, maculas Lunares non amplius discernere liceret. ceret. In determinandis phasibus usu mihi fuit egregium micrometrum Bradleianum ab Hearnio paratum, atque adplicatum telescopio Newtoniano 7 pedum: lens tamen micrometri, cum speculo juncta, tantum amplificat diametrum apparentem $45^\circ$. Observatio eclipsis Solaris 17 Octob. 1762. Tempore vero VII. 17 50 ex nubibus emergebat Sol, eclipsis jam inceperat, fere 0, 75 digitorum. | | partes micrometri | digiti obscurati | |-----|------------------|-----------------| | 21 | 10 | 38 | | 26 | 50 | 35 | | 32 | 54 | 33 | | 37 | 19 | 29 | | 46 | 53 | 26 | | 53 | 20 Luna ad macularum maximam. | | | | | |-----|-----------------|-----------------| | 55 | 5 | 24 | | 58 | 50 | 24 | | VIII.| 1 22 | 23 | | 3 | 32 | 23 | | 8 | 41 | 23 | | 15 | 50 | 23 | | 21 | 12 | 24 | | 22 | 58 | 25 | | 25 | 48 | 26 | | 35 | 42 Macula memorata tota emergit. | | | | | |-----|-----------------|-----------------| | 39 | 12 | 31 | | 51 | 39 | 37 | | 56 | 55 | 39 | IX. 3 12 Finis. Micrometrum ita est constitutum, ut in unaquaque revolutione cochleæ continantur 40 partes minores, quapropter notavi partes tum majores five resolutiones, tum minores, quæ inter limbum Lunæ & inter limbum Solis comprehendebantur: cum autem Solis diameter meter horizontalis occuparet 43 partes majores, facilis erat determinatio digitorum obfcuratorum. Observatio defectus Lunaris 1 Novemb. 1762. Tempore vero VII. 30 26 Penumbra densa apparet, ita ut initium non longe abesse judicarem. 40 30 Umbra ad Grimaldum & simul ad mare humorum. 44 56 Grimaldus totus obtegitur. 52 26 Tycho totus tegitur. VIII. 14 4 digitii obfcurati - - - 5 6 54 22 48 - - - - - - - 6 4 24 31 49 - - - - - - - 6 27 39 dubia 50 14 Copernicus totus tegitur. IX. 3 6 Copernicus totus extra umbram. 9 16 Umbra per medium Grimaldum. 11 1 Grimaldus totus extra umbram. 27 59 Dionysius extra umbram. 40 56 Umbra ad Schickardum. 43 9 Schickardus extra umbram. 48 17 Capuanus extra umbram. Post horam IX. 50' nebula fensim densior evadens impediebat, quo minus phasae notare, maculas discernere & eclipsis finem observare potuerim. Id autem miratus fui in hoc Lunari deliquio, penumbra adeo mature se se monstrasse, 7 vel 8 minutis primis, antequam ipsam umbrae animadverterem. Vale, vir spectatisime, tibique persuadeas, me nominis tui perpetuum fore cultorem. Dab. Lugduni Batavorum a d. Novembris MDCCLXII. CVII. An