248 Presents. 



Loescher (M. G.) Physica Experimentalis Compendiosa. 8vo. 

 Vitembergae 1715. The Linnean Society. 



Lubbock (R.) Dissertatio Physico-Chemica, inanguralis, de Prin- 

 cipio Sorbili, sive communi Mutationum Chemicarum Causa, 

 Quaestionem, an Phlogiston fit Substantia, an Qualitas, agitans. 

 8vo. Edinburgi 1784. The Linnean Society. 



Naber (H. A.) Standard Methods in Physics and Electricity criti- 

 cised, and a Test for Electric Meters proposed. 8vo. London 

 1894. The Author. 



Schreiber (P.) Meteorological Observations considered with Special 

 Reference to influence on Vegetation. 8vo. Chicago 1894. 



The Author. 



'*' Secrets." Hundert acht und dreyszig neu-Entdeckte und volkom- 

 men bewahrte Greheimniisse, oder allerhand magische .... 

 Kunst-Stiicke. 12mo. Franckfurt 1726. 



The Linnean Society. 



Spencer (J. W.) Deformation of the Lundy Beach and Birth of 

 Lake Erie. 8vo. New Haven 1894 ; The Duration of Niagara 

 Falls. 8vo. New Haven 1894. The Author. 



Walker (R.) An Account of some Remarkable Discoveries in the 

 Production of Artificial Cold ; with Experiments on the Con- 

 gelation of Quicksilver in England. 8vo. Oxford 1796. 



The Linnean Society. 



